21422210124 has 48 divisors (see below), whose sum is σ = 58669845248. Its totient is φ = 5955208128.

The previous prime is 21422210107. The next prime is 21422210141. The reversal of 21422210124 is 42101222412.

It is an interprime number because it is at equal distance from previous prime (21422210107) and next prime (21422210141).

It is a super-2 number, since 2×21422210124² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21422210124.

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, 3443194 + ... + 3449409.

Almost surely, 2^21422210124 is an apocalyptic number.

It is an amenable number.

21422210124 is an abundant number, since it is smaller than the sum of its proper divisors (37247635124).

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

21422210124 is a wasteful number, since it uses less digits than its factorization.

21422210124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6892654 (or 6892652 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21422210124 its reverse (42101222412), we get a palindrome (63523432536).

The spelling of 21422210124 in words is "twenty-one billion, four hundred twenty-two million, two hundred ten thousand, one hundred twenty-four".