22102221112121 has 4 divisors (see below), whose sum is σ = 22102345149312. Its totient is φ = 22102097074932.

The previous prime is 22102221112099. The next prime is 22102221112123. The reversal of 22102221112121 is 12121112220122.

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 22102221112121 - 2¹⁰ = 22102221111097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102221112093 and 22102221112102.

It is not an unprimeable number, because it can be changed into a prime (22102221112123) 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, 61750925 + ... + 62107818.

It is an arithmetic number, because the mean of its divisors is an integer number (5525586287328).

Almost surely, 2^{22102221112121} is an apocalyptic number.

It is an amenable number.

22102221112121 is a deficient number, since it is larger than the sum of its proper divisors (124037191).

22102221112121 is a wasteful number, since it uses less digits than its factorization.

22102221112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124037190.

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

Adding to 22102221112121 its reverse (12121112220122), we get a palindrome (34223333332243).

The spelling of 22102221112121 in words is "twenty-two trillion, one hundred two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".