22021112120111 has 4 divisors (see below), whose sum is σ = 23715043821672. Its totient is φ = 20327180418552.

The previous prime is 22021112120093. The next prime is 22021112120129. The reversal of 22021112120111 is 11102121112022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22021112120093) and next prime (22021112120129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021112120111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22021112120111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021112120191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846965850761 + ... + 846965850786.

It is an arithmetic number, because the mean of its divisors is an integer number (5928760955418).

Almost surely, 2^{22021112120111} is an apocalyptic number.

22021112120111 is a deficient number, since it is larger than the sum of its proper divisors (1693931701561).

22021112120111 is a wasteful number, since it uses less digits than its factorization.

22021112120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693931701560.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22021112120111 its reverse (11102121112022), we get a palindrome (33123233232133).

The spelling of 22021112120111 in words is "twenty-two trillion, twenty-one billion, one hundred twelve million, one hundred twenty thousand, one hundred eleven".