21122120112113 has 8 divisors (see below), whose sum is σ = 21468457448640. Its totient is φ = 20775785132880.

The previous prime is 21122120112103. The next prime is 21122120112127. The reversal of 21122120112113 is 31121102122112.

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 21122120112113 - 2²² = 21122115917809 is a prime.

It is a super-2 number, since 2×21122120112113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122120112103) 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, 33705506 + ... + 34326452.

It is an arithmetic number, because the mean of its divisors is an integer number (2683557181080).

Almost surely, 2^{21122120112113} is an apocalyptic number.

It is an amenable number.

21122120112113 is a deficient number, since it is larger than the sum of its proper divisors (346337336527).

21122120112113 is an equidigital number, since it uses as much as digits as its factorization.

21122120112113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178647.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 21122120112113 its reverse (31121102122112), we get a palindrome (52243222234225).

The spelling of 21122120112113 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twelve thousand, one hundred thirteen".