21122001110111 has 8 divisors (see below), whose sum is σ = 23042329922304. Its totient is φ = 19201696780120.

The previous prime is 21122001110101. The next prime is 21122001110113. The reversal of 21122001110111 is 11101110022112.

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 21122001110111 - 2²² = 21121996915807 is a prime.

It is a super-2 number, since 2×21122001110111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122001110113) 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, 4292885 + ... + 7789278.

It is an arithmetic number, because the mean of its divisors is an integer number (2880291240288).

Almost surely, 2^{21122001110111} is an apocalyptic number.

21122001110111 is a deficient number, since it is larger than the sum of its proper divisors (1920328812193).

21122001110111 is a wasteful number, since it uses less digits than its factorization.

21122001110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12241101.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21122001110111 its reverse (11101110022112), we get a palindrome (32223111132223).

The spelling of 21122001110111 in words is "twenty-one trillion, one hundred twenty-two billion, one million, one hundred ten thousand, one hundred eleven".