21113010124 has 24 divisors (see below), whose sum is σ = 39183244128. Its totient is φ = 9919768320.

The previous prime is 21113010097. The next prime is 21113010167. The reversal of 21113010124 is 42101031112.

It is a super-2 number, since 2×21113010124² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21113010098 and 21113010107.

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, 203119 + ... + 288934.

It is an arithmetic number, because the mean of its divisors is an integer number (1632635172).

Almost surely, 2^21113010124 is an apocalyptic number.

It is an amenable number.

21113010124 is a deficient number, since it is larger than the sum of its proper divisors (18070234004).

21113010124 is a wasteful number, since it uses less digits than its factorization.

21113010124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492705 (or 492703 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21113010124 its reverse (42101031112), we get a palindrome (63214041236).

The spelling of 21113010124 in words is "twenty-one billion, one hundred thirteen million, ten thousand, one hundred twenty-four".