21014303140 has 12 divisors (see below), whose sum is σ = 44130036636. Its totient is φ = 8405721248.

The previous prime is 21014303113. The next prime is 21014303161. The reversal of 21014303140 is 4130341012.

It can be written as a sum of positive squares in 2 ways, for example, as 3252877156 + 17761425984 = 57034^2 + 133272^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525357559 + ... + 525357598.

It is an arithmetic number, because the mean of its divisors is an integer number (3677503053).

Almost surely, 2^21014303140 is an apocalyptic number.

21014303140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21014303140 is an abundant number, since it is smaller than the sum of its proper divisors (23115733496).

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

21014303140 is a wasteful number, since it uses less digits than its factorization.

21014303140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050715166 (or 1050715164 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21014303140 its reverse (4130341012), we get a palindrome (25144644152).

The spelling of 21014303140 in words is "twenty-one billion, fourteen million, three hundred three thousand, one hundred forty".