22100122021121 has 8 divisors (see below), whose sum is σ = 23457342236040. Its totient is φ = 20749258810368.

The previous prime is 22100122021099. The next prime is 22100122021123. The reversal of 22100122021121 is 12112022100122.

It can be written as a sum of positive squares in 4 ways, for example, as 18216506886400 + 3883615134721 = 4268080^2 + 1970689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22100122021121 - 2³⁴ = 22082942151937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22100122021121.

It is not an unprimeable number, because it can be changed into a prime (22100122021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589243876 + ... + 1589257781.

It is an arithmetic number, because the mean of its divisors is an integer number (2932167779505).

Almost surely, 2^{22100122021121} is an apocalyptic number.

It is an amenable number.

22100122021121 is a deficient number, since it is larger than the sum of its proper divisors (1357220214919).

22100122021121 is a wasteful number, since it uses less digits than its factorization.

22100122021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178502083.

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

Adding to 22100122021121 its reverse (12112022100122), we get a palindrome (34212144121243).

The spelling of 22100122021121 in words is "twenty-two trillion, one hundred billion, one hundred twenty-two million, twenty-one thousand, one hundred twenty-one".