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21000101094 = 2337509109147
BaseRepresentation
bin10011100011101101…
…000001110011100110
32000012112101200001000
4103203231001303212
5321002011213334
613351453014130
71342254625350
oct234355016346
960175350030
1021000101094
1189a7011855
1240a0a84346
131c9894bb2b
14103305c0d0
1582d96c299
hex4e3b41ce6

21000101094 has 64 divisors (see below), whose sum is σ = 53438860800. Its totient is φ = 5988186144.

The previous prime is 21000101069. The next prime is 21000101107. The reversal of 21000101094 is 49010100012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137829 + ... + 246975.

It is an arithmetic number, because the mean of its divisors is an integer number (834982200).

Almost surely, 221000101094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21000101094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26719430400).

21000101094 is an abundant number, since it is smaller than the sum of its proper divisors (32438759706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000101094 is a wasteful number, since it uses less digits than its factorization.

21000101094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109674 (or 109668 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 21000101094 in words is "twenty-one billion, one hundred one thousand, ninety-four".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 509 1018 1527 3054 3563 4581 7126 9162 10689 13743 21378 27486 32067 64134 96201 109147 192402 218294 327441 654882 764029 982323 1528058 1964646 2292087 2946969 4584174 5893938 6876261 13752522 20628783 41257566 55555823 111111646 166667469 333334938 388890761 500002407 777781522 1000004814 1166672283 1500007221 2333344566 3000014442 3500016849 7000033698 10500050547 21000101094