22021364125 has 8 divisors (see below), whose sum is σ = 27482662584. Its totient is φ = 17617091200.

The previous prime is 22021364093. The next prime is 22021364147. The reversal of 22021364125 is 52146312022.

It can be written as a sum of positive squares in 4 ways, for example, as 798119001 + 21223245124 = 28251^2 + 145682^2 .

It is not a de Polignac number, because 22021364125 - 2⁵ = 22021364093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021364093 and 22021364102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88085332 + ... + 88085581.

It is an arithmetic number, because the mean of its divisors is an integer number (3435332823).

Almost surely, 2^22021364125 is an apocalyptic number.

22021364125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22021364125 is a deficient number, since it is larger than the sum of its proper divisors (5461298459).

22021364125 is an equidigital number, since it uses as much as digits as its factorization.

22021364125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176170928 (or 176170918 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 22021364125 its reverse (52146312022), we get a palindrome (74167676147).

The spelling of 22021364125 in words is "twenty-two billion, twenty-one million, three hundred sixty-four thousand, one hundred twenty-five".