22122100121 has 16 divisors (see below), whose sum is σ = 25411631040. Its totient is φ = 19046329920.

The previous prime is 22122100111. The next prime is 22122100127. The reversal of 22122100121 is 12100122122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122100096 and 22122100105.

It is not an unprimeable number, because it can be changed into a prime (22122100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697811 + ... + 728823.

It is an arithmetic number, because the mean of its divisors is an integer number (1588226940).

Almost surely, 2^22122100121 is an apocalyptic number.

It is an amenable number.

22122100121 is a deficient number, since it is larger than the sum of its proper divisors (3289530919).

22122100121 is a wasteful number, since it uses less digits than its factorization.

22122100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34456.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22122100121 its reverse (12100122122), we get a palindrome (34222222243).

The spelling of 22122100121 in words is "twenty-two billion, one hundred twenty-two million, one hundred thousand, one hundred twenty-one".