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20010212013 = 3112373147787
BaseRepresentation
bin10010101000101100…
…111001101010101101
31220122112202002111110
4102220230321222231
5311440103241023
613105332142233
71305604665351
oct225054715255
956575662443
1020010212013
118539274500
123a65467979
131b6b841b4c
14d7b7c3461
157c1ad6a93
hex4a8b39aad

20010212013 has 24 divisors (see below), whose sum is σ = 29405082784. Its totient is φ = 12094806240.

The previous prime is 20010211987. The next prime is 20010212023. The reversal of 20010212013 is 31021201002.

It is not a de Polignac number, because 20010212013 - 228 = 19741776557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20010212013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010212023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61506 + ... + 209292.

Almost surely, 220010212013 is an apocalyptic number.

It is an amenable number.

20010212013 is a deficient number, since it is larger than the sum of its proper divisors (9394870771).

20010212013 is a wasteful number, since it uses less digits than its factorization.

20010212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148185 (or 148174 counting only the distinct ones).

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

Adding to 20010212013 its reverse (31021201002), we get a palindrome (51031413015).

The spelling of 20010212013 in words is "twenty billion, ten million, two hundred twelve thousand, thirteen".

Divisors: 1 3 11 33 121 363 373 1119 4103 12309 45133 135399 147787 443361 1625657 4876971 17882227 53646681 55124551 165373653 606370061 1819110183 6670070671 20010212013