21970035213 has 32 divisors (see below), whose sum is σ = 33676800000. Its totient is φ = 12479930496.

The previous prime is 21970035211. The next prime is 21970035247. The reversal of 21970035213 is 31253007912.

It is not a de Polignac number, because 21970035213 - 2¹ = 21970035211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21970035211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7324288 + ... + 7327286.

It is an arithmetic number, because the mean of its divisors is an integer number (1052400000).

Almost surely, 2^21970035213 is an apocalyptic number.

It is an amenable number.

21970035213 is a deficient number, since it is larger than the sum of its proper divisors (11706764787).

21970035213 is a wasteful number, since it uses less digits than its factorization.

21970035213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961.

The product of its (nonzero) digits is 11340, while the sum is 33.

The spelling of 21970035213 in words is "twenty-one billion, nine hundred seventy million, thirty-five thousand, two hundred thirteen".