22121111022211 has 24 divisors (see below), whose sum is σ = 23902897699824. Its totient is φ = 20458082131200.

The previous prime is 22121111022193. The next prime is 22121111022217. The reversal of 22121111022211 is 11222011112122.

It is a happy number.

It is not a de Polignac number, because 22121111022211 - 2¹¹ = 22121111020163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121111022217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27561295 + ... + 28352551.

It is an arithmetic number, because the mean of its divisors is an integer number (995954070826).

Almost surely, 2^{22121111022211} is an apocalyptic number.

22121111022211 is a deficient number, since it is larger than the sum of its proper divisors (1781786677613).

22121111022211 is a wasteful number, since it uses less digits than its factorization.

22121111022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793139 (or 793120 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22121111022211 its reverse (11222011112122), we get a palindrome (33343122134333).

The spelling of 22121111022211 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, twenty-two thousand, two hundred eleven".