21424274302 has 4 divisors (see below), whose sum is σ = 32136411456. Its totient is φ = 10712137150.

The previous prime is 21424274273. The next prime is 21424274309. The reversal of 21424274302 is 20347242412.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21424274309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5356068574 + ... + 5356068577.

It is an arithmetic number, because the mean of its divisors is an integer number (8034102864).

Almost surely, 2^21424274302 is an apocalyptic number.

21424274302 is a deficient number, since it is larger than the sum of its proper divisors (10712137154).

21424274302 is a wasteful number, since it uses less digits than its factorization.

21424274302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712137153.

The product of its (nonzero) digits is 21504, while the sum is 31.

The spelling of 21424274302 in words is "twenty-one billion, four hundred twenty-four million, two hundred seventy-four thousand, three hundred two".