21131402020302 has 16 divisors (see below), whose sum is σ = 48300347475072. Its totient is φ = 6037543434360.

The previous prime is 21131402020247. The next prime is 21131402020321. The reversal of 21131402020302 is 20302020413112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 251564309724 + ... + 251564309807.

It is an arithmetic number, because the mean of its divisors is an integer number (3018771717192).

Almost surely, 2^{21131402020302} is an apocalyptic number.

21131402020302 is an abundant number, since it is smaller than the sum of its proper divisors (27168945454770).

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

21131402020302 is a wasteful number, since it uses less digits than its factorization.

21131402020302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503128619543.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21131402020302 its reverse (20302020413112), we get a palindrome (41433422433414).

The spelling of 21131402020302 in words is "twenty-one trillion, one hundred thirty-one billion, four hundred two million, twenty thousand, three hundred two".