22155420332 has 24 divisors (see below), whose sum is σ = 39611860512. Its totient is φ = 10839628800.

The previous prime is 22155420293. The next prime is 22155420379. The reversal of 22155420332 is 23302455122.

It is a junction number, because it is equal to n+sod(n) for n = 22155420295 and 22155420304.

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, 188144 + ... + 282327.

It is an arithmetic number, because the mean of its divisors is an integer number (1650494188).

Almost surely, 2^22155420332 is an apocalyptic number.

It is an amenable number.

22155420332 is a deficient number, since it is larger than the sum of its proper divisors (17456440180).

22155420332 is a wasteful number, since it uses less digits than its factorization.

22155420332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470729 (or 470727 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 22155420332 its reverse (23302455122), we get a palindrome (45457875454).

The spelling of 22155420332 in words is "twenty-two billion, one hundred fifty-five million, four hundred twenty thousand, three hundred thirty-two".