22021121011211 has 32 divisors (see below), whose sum is σ = 26805425955840. Its totient is φ = 17659659764736.

The previous prime is 22021121011163. The next prime is 22021121011237. The reversal of 22021121011211 is 11211012112022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021121011211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22021121011211.

It is not an unprimeable number, because it can be changed into a prime (22021121011261) 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, 62726810 + ... + 63076896.

It is an arithmetic number, because the mean of its divisors is an integer number (837669561120).

Almost surely, 2^{22021121011211} is an apocalyptic number.

22021121011211 is a deficient number, since it is larger than the sum of its proper divisors (4784304944629).

22021121011211 is a wasteful number, since it uses less digits than its factorization.

22021121011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353243.

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

Adding to 22021121011211 its reverse (11211012112022), we get a palindrome (33232133123233).

The spelling of 22021121011211 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, eleven thousand, two hundred eleven".