22122120011021 has 16 divisors (see below), whose sum is σ = 24032606916864. Its totient is φ = 20306356228224.

The previous prime is 22122120011003. The next prime is 22122120011063. The reversal of 22122120011021 is 12011002122122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122120011021 is a prime.

It is a super-2 number, since 2×22122120011021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122120011071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177988841 + ... + 178113086.

It is an arithmetic number, because the mean of its divisors is an integer number (1502037932304).

Almost surely, 2^{22122120011021} is an apocalyptic number.

It is an amenable number.

22122120011021 is a deficient number, since it is larger than the sum of its proper divisors (1910486905843).

22122120011021 is a wasteful number, since it uses less digits than its factorization.

22122120011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356102060.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22122120011021 its reverse (12011002122122), we get a palindrome (34133122133143).

The spelling of 22122120011021 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred twenty million, eleven thousand, twenty-one".