22202021121 has 16 divisors (see below), whose sum is σ = 33898927104. Its totient is φ = 12661640784.

The previous prime is 22202021117. The next prime is 22202021167. The reversal of 22202021121 is 12112020222.

It is not a de Polignac number, because 22202021121 - 2² = 22202021117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22202021121.

It is not an unprimeable number, because it can be changed into a prime (22202021111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040371 + ... + 1061496.

It is an arithmetic number, because the mean of its divisors is an integer number (2118682944).

Almost surely, 2^22202021121 is an apocalyptic number.

22202021121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22202021121 is a deficient number, since it is larger than the sum of its proper divisors (11696905983).

22202021121 is a wasteful number, since it uses less digits than its factorization.

22202021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102380.

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

Adding to 22202021121 its reverse (12112020222), we get a palindrome (34314041343).

The spelling of 22202021121 in words is "twenty-two billion, two hundred two million, twenty-one thousand, one hundred twenty-one".