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10101009091 = 101211473981
BaseRepresentation
bin10010110100001000…
…10010101011000011
3222001221211102112211
421122010102223003
5131141324242331
64350151402551
7505212106045
oct113204225303
928057742484
1010101009091
1143138356a8
121b5a983457
13c4c8c5374
146bb737a95
153e1bb18b1
hex25a112ac3

10101009091 has 8 divisors (see below), whose sum is σ = 10249386768. Its totient is φ = 9953580000.

The previous prime is 10101009073. The next prime is 10101009101. The reversal of 10101009091 is 19090010101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10101009091 - 25 = 10101009059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10101009071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215680 + ... + 258301.

It is an arithmetic number, because the mean of its divisors is an integer number (1281173346).

Almost surely, 210101009091 is an apocalyptic number.

10101009091 is a deficient number, since it is larger than the sum of its proper divisors (148377677).

10101009091 is a wasteful number, since it uses less digits than its factorization.

10101009091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474293.

The product of its (nonzero) digits is 81, while the sum is 22.

Adding to 10101009091 its reverse (19090010101), we get a palindrome (29191019192).

It can be divided in two parts, 1010 and 1009091, that added together give a palindrome (1010101).

The spelling of 10101009091 in words is "ten billion, one hundred one million, nine thousand, ninety-one".

Divisors: 1 101 211 21311 473981 47872081 100009991 10101009091