22122112020121 has 4 divisors (see below), whose sum is σ = 22164572888244. Its totient is φ = 22079651152000.

The previous prime is 22122112020097. The next prime is 22122112020163. The reversal of 22122112020121 is 12102021122122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5749276995225 + 16372835024896 = 2397765^2 + 4046336^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122112020121 - 2¹³ = 22122112011929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122112020721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21230433280 + ... + 21230434321.

It is an arithmetic number, because the mean of its divisors is an integer number (5541143222061).

Almost surely, 2^{22122112020121} is an apocalyptic number.

It is an amenable number.

22122112020121 is a deficient number, since it is larger than the sum of its proper divisors (42460868123).

22122112020121 is an equidigital number, since it uses as much as digits as its factorization.

22122112020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42460868122.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22122112020121 its reverse (12102021122122), we get a palindrome (34224133142243).

The spelling of 22122112020121 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred twelve million, twenty thousand, one hundred twenty-one".