22000021220111 has 12 divisors (see below), whose sum is σ = 24182059520136. Its totient is φ = 19999838979120.

The previous prime is 22000021220101. The next prime is 22000021220123. The reversal of 22000021220111 is 11102212000022.

It is a de Polignac number, because none of the positive numbers 2^k-22000021220111 is a prime.

It is a super-2 number, since 2×22000021220111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000021220101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13718240 + ... + 15237786.

It is an arithmetic number, because the mean of its divisors is an integer number (2015171626678).

Almost surely, 2^{22000021220111} is an apocalyptic number.

22000021220111 is a deficient number, since it is larger than the sum of its proper divisors (2182038300025).

22000021220111 is a wasteful number, since it uses less digits than its factorization.

22000021220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639222 (or 1639211 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22000021220111 its reverse (11102212000022), we get a palindrome (33102233220133).

The spelling of 22000021220111 in words is "twenty-two trillion, twenty-one million, two hundred twenty thousand, one hundred eleven".