21422022380 has 48 divisors (see below), whose sum is σ = 50659015680. Its totient is φ = 7538539200.

The previous prime is 21422022379. The next prime is 21422022443. The reversal of 21422022380 is 8322022412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1563710 + ... + 1577349.

It is an arithmetic number, because the mean of its divisors is an integer number (1055396160).

Almost surely, 2^21422022380 is an apocalyptic number.

21422022380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21422022380 is an abundant number, since it is smaller than the sum of its proper divisors (29236993300).

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

21422022380 is a wasteful number, since it uses less digits than its factorization.

21422022380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141110 (or 3141108 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21422022380 its reverse (8322022412), we get a palindrome (29744044792).

The spelling of 21422022380 in words is "twenty-one billion, four hundred twenty-two million, twenty-two thousand, three hundred eighty".