22121012300 has 36 divisors (see below), whose sum is σ = 48541971240. Its totient is φ = 8748981120.

The previous prime is 22121012293. The next prime is 22121012317. The reversal of 22121012300 is 321012122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1233854 + ... + 1251653.

It is an arithmetic number, because the mean of its divisors is an integer number (1348388090).

Almost surely, 2^22121012300 is an apocalyptic number.

22121012300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121012300 is an abundant number, since it is smaller than the sum of its proper divisors (26420958940).

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

22121012300 is a wasteful number, since it uses less digits than its factorization.

22121012300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485610 (or 2485603 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22121012300 its reverse (321012122), we get a palindrome (22442024422).

The spelling of 22121012300 in words is "twenty-two billion, one hundred twenty-one million, twelve thousand, three hundred".