21860122634 has 16 divisors (see below), whose sum is σ = 37477267008. Its totient is φ = 9367931232.

The previous prime is 21860122619. The next prime is 21860122637. The reversal of 21860122634 is 43622106812.

It is a junction number, because it is equal to n+sod(n) for n = 21860122594 and 21860122603.

It is not an unprimeable number, because it can be changed into a prime (21860122637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169094 + ... + 268910.

It is an arithmetic number, because the mean of its divisors is an integer number (2342329188).

Almost surely, 2^21860122634 is an apocalyptic number.

21860122634 is a deficient number, since it is larger than the sum of its proper divisors (15617144374).

21860122634 is a wasteful number, since it uses less digits than its factorization.

21860122634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115469.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 21860122634 in words is "twenty-one billion, eight hundred sixty million, one hundred twenty-two thousand, six hundred thirty-four".