22022312121 has 12 divisors (see below), whose sum is σ = 33484217520. Its totient is φ = 13908828600.

The previous prime is 22022312087. The next prime is 22022312131. The reversal of 22022312121 is 12121322022.

22022312121 is a `hidden beast` number, since 220 + 2 + 231 + 212 + 1 = 666.

It is not a de Polignac number, because 22022312121 - 2¹¹ = 22022310073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22022312094 and 22022312103.

It is not an unprimeable number, because it can be changed into a prime (22022312131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64392555 + ... + 64392896.

It is an arithmetic number, because the mean of its divisors is an integer number (2790351460).

Almost surely, 2^22022312121 is an apocalyptic number.

It is an amenable number.

22022312121 is a deficient number, since it is larger than the sum of its proper divisors (11461905399).

22022312121 is a wasteful number, since it uses less digits than its factorization.

22022312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128785476 (or 128785473 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22022312121 its reverse (12121322022), we get a palindrome (34143634143).

Subtracting from 22022312121 its reverse (12121322022), we obtain a palindrome (9900990099).

The spelling of 22022312121 in words is "twenty-two billion, twenty-two million, three hundred twelve thousand, one hundred twenty-one".