21140257302 has 24 divisors (see below), whose sum is σ = 45847021584. Its totient is φ = 7040116944.

The previous prime is 21140257301. The next prime is 21140257319. The reversal of 21140257302 is 20375204112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140257301) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 533293 + ... + 571560.

It is an arithmetic number, because the mean of its divisors is an integer number (1910292566).

Almost surely, 2^21140257302 is an apocalyptic number.

21140257302 is an abundant number, since it is smaller than the sum of its proper divisors (24706764282).

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

21140257302 is a wasteful number, since it uses less digits than its factorization.

21140257302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105924 (or 1105921 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The spelling of 21140257302 in words is "twenty-one billion, one hundred forty million, two hundred fifty-seven thousand, three hundred two".