22022012121 has 16 divisors (see below), whose sum is σ = 29439834240. Its totient is φ = 14642812800.

The previous prime is 22022012107. The next prime is 22022012123. The reversal of 22022012121 is 12121022022.

It is not a de Polignac number, because 22022012121 - 2⁶ = 22022012057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22022012121.

It is not an unprimeable number, because it can be changed into a prime (22022012123) 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, 2219271 + ... + 2229171.

It is an arithmetic number, because the mean of its divisors is an integer number (1839989640).

Almost surely, 2^22022012121 is an apocalyptic number.

It is an amenable number.

22022012121 is a deficient number, since it is larger than the sum of its proper divisors (7417822119).

22022012121 is a wasteful number, since it uses less digits than its factorization.

22022012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11776.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22022012121 its reverse (12121022022), we get a palindrome (34143034143).

Subtracting from 22022012121 its reverse (12121022022), we obtain a palindrome (9900990099).

The spelling of 22022012121 in words is "twenty-two billion, twenty-two million, twelve thousand, one hundred twenty-one".