22122212011121 has 4 divisors (see below), whose sum is σ = 22206326885952. Its totient is φ = 22038097136292.

The previous prime is 22122212011091. The next prime is 22122212011127. The reversal of 22122212011121 is 12111021222122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22122212011121 - 2¹⁸ = 22122211748977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122212011093 and 22122212011102.

It is not an unprimeable number, because it can be changed into a prime (22122212011127) 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 3 ways as a sum of consecutive naturals, for example, 42057437021 + ... + 42057437546.

It is an arithmetic number, because the mean of its divisors is an integer number (5551581721488).

Almost surely, 2^{22122212011121} is an apocalyptic number.

It is an amenable number.

22122212011121 is a deficient number, since it is larger than the sum of its proper divisors (84114874831).

22122212011121 is an equidigital number, since it uses as much as digits as its factorization.

22122212011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84114874830.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22122212011121 its reverse (12111021222122), we get a palindrome (34233233233243).

The spelling of 22122212011121 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twelve million, eleven thousand, one hundred twenty-one".