22012002021121 has 64 divisors (see below), whose sum is σ = 26315460864000. Its totient is φ = 18021368042496.

The previous prime is 22012002021109. The next prime is 22012002021127. The reversal of 22012002021121 is 12112020021022.

It is a happy number.

It is not a de Polignac number, because 22012002021121 - 2¹⁹ = 22012001496833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22012002021095 and 22012002021104.

It is not an unprimeable number, because it can be changed into a prime (22012002021127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2745661705 + ... + 2745669721.

It is an arithmetic number, because the mean of its divisors is an integer number (411179076000).

Almost surely, 2^{22012002021121} is an apocalyptic number.

It is an amenable number.

22012002021121 is a deficient number, since it is larger than the sum of its proper divisors (4303458842879).

22012002021121 is a wasteful number, since it uses less digits than its factorization.

22012002021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8918.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22012002021121 its reverse (12112020021022), we get a palindrome (34124022042143).

The spelling of 22012002021121 in words is "twenty-two trillion, twelve billion, two million, twenty-one thousand, one hundred twenty-one".