22153422420 has 72 divisors (see below), whose sum is σ = 68119285416. Its totient is φ = 5826650112.

The previous prime is 22153422407. The next prime is 22153422427. The reversal of 22153422420 is 2422435122.

22153422420 is a `hidden beast` number, since 2 + 215 + 3 + 4 + 22 + 420 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7385339844 + 14768082576 = 85938^2 + 121524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153422427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829837 + ... + 856116.

Almost surely, 2^22153422420 is an apocalyptic number.

22153422420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22153422420 is an abundant number, since it is smaller than the sum of its proper divisors (45965862996).

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

22153422420 is a wasteful number, since it uses less digits than its factorization.

22153422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686041 (or 1686036 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 22153422420 its reverse (2422435122), we get a palindrome (24575857542).

The spelling of 22153422420 in words is "twenty-two billion, one hundred fifty-three million, four hundred twenty-two thousand, four hundred twenty".