22001211012121 has 16 divisors (see below), whose sum is σ = 24359849614080. Its totient is φ = 19702334512080.

The previous prime is 22001211012101. The next prime is 22001211012167. The reversal of 22001211012121 is 12121011210022.

It is not a de Polignac number, because 22001211012121 - 2⁵ = 22001211012089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001211012095 and 22001211012104.

It is not an unprimeable number, because it can be changed into a prime (22001211012101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89244790 + ... + 89490976.

It is an arithmetic number, because the mean of its divisors is an integer number (1522490600880).

Almost surely, 2^{22001211012121} is an apocalyptic number.

It is an amenable number.

22001211012121 is a deficient number, since it is larger than the sum of its proper divisors (2358638601959).

22001211012121 is a wasteful number, since it uses less digits than its factorization.

22001211012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367524.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22001211012121 its reverse (12121011210022), we get a palindrome (34122222222143).

The spelling of 22001211012121 in words is "twenty-two trillion, one billion, two hundred eleven million, twelve thousand, one hundred twenty-one".