21026541202 has 8 divisors (see below), whose sum is σ = 31864964796. Its totient is φ = 10404886272.

The previous prime is 21026541187. The next prime is 21026541227. The reversal of 21026541202 is 20214562012.

It can be written as a sum of positive squares in 2 ways, for example, as 18295538121 + 2731003081 = 135261^2 + 52259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 54191923 + ... + 54192310.

Almost surely, 2^21026541202 is an apocalyptic number.

21026541202 is a deficient number, since it is larger than the sum of its proper divisors (10838423594).

21026541202 is a wasteful number, since it uses less digits than its factorization.

21026541202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108384332.

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 21026541202 in words is "twenty-one billion, twenty-six million, five hundred forty-one thousand, two hundred two".