21102111113113 has 8 divisors (see below), whose sum is σ = 21107802514176. Its totient is φ = 21096420072000.

The previous prime is 21102111113107. The next prime is 21102111113119. The reversal of 21102111113113 is 31131111120112.

It is an interprime number because it is at equal distance from previous prime (21102111113107) and next prime (21102111113119).

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 21102111113113 - 2⁵ = 21102111113081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102111113119) 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, 150068188 + ... + 150208738.

It is an arithmetic number, because the mean of its divisors is an integer number (2638475314272).

Almost surely, 2^{21102111113113} is an apocalyptic number.

It is an amenable number.

21102111113113 is a deficient number, since it is larger than the sum of its proper divisors (5691401063).

21102111113113 is a wasteful number, since it uses less digits than its factorization.

21102111113113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179975.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 21102111113113 its reverse (31131111120112), we get a palindrome (52233222233225).

The spelling of 21102111113113 in words is "twenty-one trillion, one hundred two billion, one hundred eleven million, one hundred thirteen thousand, one hundred thirteen".