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20010312201 = 3112137402371
BaseRepresentation
bin10010101000101101…
…010010001000001001
31220122112221011221010
4102220231102020021
5311440114442301
613105334234133
71305605563425
oct225055221011
956575834833
1020010312201
118539332800
123a654b5949
131b6b878629
14d7b80bb85
157c1b065d6
hex4a8b52209

20010312201 has 24 divisors (see below), whose sum is σ = 29540542752. Its totient is φ = 12038910400.

The previous prime is 20010312187. The next prime is 20010312221. The reversal of 20010312201 is 10221301002.

It is not a de Polignac number, because 20010312201 - 25 = 20010312169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20010312221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151455 + ... + 250916.

It is an arithmetic number, because the mean of its divisors is an integer number (1230855948).

Almost surely, 220010312201 is an apocalyptic number.

It is an amenable number.

20010312201 is a deficient number, since it is larger than the sum of its proper divisors (9530230551).

20010312201 is a wasteful number, since it uses less digits than its factorization.

20010312201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402533 (or 402522 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20010312201 its reverse (10221301002), we get a palindrome (30231613203).

The spelling of 20010312201 in words is "twenty billion, ten million, three hundred twelve thousand, two hundred one".

Divisors: 1 3 11 33 121 137 363 411 1507 4521 16577 49731 402371 1207113 4426081 13278243 48686891 55124827 146060673 165374481 606373097 1819119291 6670104067 20010312201