22121302120 has 32 divisors (see below), whose sum is σ = 49906402920. Its totient is φ = 8824792320.

The previous prime is 22121302111. The next prime is 22121302123. The reversal of 22121302120 is 2120312122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10731716836 + 11389585284 = 103594^2 + 106722^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22121302094 and 22121302103.

It is not an unprimeable number, because it can be changed into a prime (22121302123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726411 + ... + 756250.

Almost surely, 2^22121302120 is an apocalyptic number.

22121302120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121302120 is an abundant number, since it is smaller than the sum of its proper divisors (27785100800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121302120 is a wasteful number, since it uses less digits than its factorization.

22121302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483045 (or 1483041 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22121302120 its reverse (2120312122), we get a palindrome (24241614242).

The spelling of 22121302120 in words is "twenty-two billion, one hundred twenty-one million, three hundred two thousand, one hundred twenty".