22021211100111 has 32 divisors (see below), whose sum is σ = 29664904642560. Its totient is φ = 14529755134944.

The previous prime is 22021211100029. The next prime is 22021211100131. The reversal of 22021211100111 is 11100111212022.

It is a happy number.

It is not a de Polignac number, because 22021211100111 - 2⁷ = 22021211099983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021211100131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394313556 + ... + 394369398.

It is an arithmetic number, because the mean of its divisors is an integer number (927028270080).

Almost surely, 2^{22021211100111} is an apocalyptic number.

22021211100111 is a deficient number, since it is larger than the sum of its proper divisors (7643693542449).

22021211100111 is a wasteful number, since it uses less digits than its factorization.

22021211100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58475.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22021211100111 its reverse (11100111212022), we get a palindrome (33121322312133).

The spelling of 22021211100111 in words is "twenty-two trillion, twenty-one billion, two hundred eleven million, one hundred thousand, one hundred eleven".