21123314010 has 48 divisors (see below), whose sum is σ = 54979952040. Its totient is φ = 5626798080.

The previous prime is 21123313999. The next prime is 21123314029. The reversal of 21123314010 is 1041332112.

21123314010 is a `hidden beast` number, since 211 + 23 + 31 + 401 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4217333481 + 16905980529 = 64941^2 + 130023^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42711 + ... + 209930.

Almost surely, 2^21123314010 is an apocalyptic number.

21123314010 is an abundant number, since it is smaller than the sum of its proper divisors (33856638030).

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

21123314010 is a wasteful number, since it uses less digits than its factorization.

21123314010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253583 (or 253580 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21123314010 its reverse (1041332112), we get a palindrome (22164646122).

The spelling of 21123314010 in words is "twenty-one billion, one hundred twenty-three million, three hundred fourteen thousand, ten".