21562342130 has 16 divisors (see below), whose sum is σ = 44356818240. Its totient is φ = 7392802992.

The previous prime is 21562342129. The next prime is 21562342157. The reversal of 21562342130 is 3124326512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21562342093 and 21562342102.

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, 154016660 + ... + 154016799.

It is an arithmetic number, because the mean of its divisors is an integer number (2772301140).

Almost surely, 2^21562342130 is an apocalyptic number.

21562342130 is an abundant number, since it is smaller than the sum of its proper divisors (22794476110).

21562342130 is a wasteful number, since it uses less digits than its factorization.

21562342130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308033473.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 21562342130 its reverse (3124326512), we get a palindrome (24686668642).

The spelling of 21562342130 in words is "twenty-one billion, five hundred sixty-two million, three hundred forty-two thousand, one hundred thirty".