20215630124 has 12 divisors (see below), whose sum is σ = 35397921048. Its totient is φ = 10101938400.

The previous prime is 20215630117. The next prime is 20215630129. The reversal of 20215630124 is 42103651202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20215630093 and 20215630102.

It is not an unprimeable number, because it can be changed into a prime (20215630129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1461422 + ... + 1475189.

It is an arithmetic number, because the mean of its divisors is an integer number (2949826754).

Almost surely, 2^20215630124 is an apocalyptic number.

It is an amenable number.

20215630124 is a deficient number, since it is larger than the sum of its proper divisors (15182290924).

20215630124 is a wasteful number, since it uses less digits than its factorization.

20215630124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938336 (or 2938334 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 20215630124 in words is "twenty billion, two hundred fifteen million, six hundred thirty thousand, one hundred twenty-four".