21401502302 has 64 divisors (see below), whose sum is σ = 36495360000. Its totient is φ = 9364481280.

The previous prime is 21401502299. The next prime is 21401502337. The reversal of 21401502302 is 20320510412.

It is a super-2 number, since 2×21401502302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3036899 + ... + 3043937.

It is an arithmetic number, because the mean of its divisors is an integer number (570240000).

Almost surely, 2^21401502302 is an apocalyptic number.

21401502302 is a deficient number, since it is larger than the sum of its proper divisors (15093857698).

21401502302 is a wasteful number, since it uses less digits than its factorization.

21401502302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209.

The product of its (nonzero) digits is 480, while the sum is 20.

The spelling of 21401502302 in words is "twenty-one billion, four hundred one million, five hundred two thousand, three hundred two".