21972911134 has 8 divisors (see below), whose sum is σ = 32962139640. Its totient is φ = 10985531256.

The previous prime is 21972911117. The next prime is 21972911141. The reversal of 21972911134 is 43111927912.

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

It is a super-2 number, since 2×21972911134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432049 + ... + 480220.

It is an arithmetic number, because the mean of its divisors is an integer number (4120267455).

Almost surely, 2^21972911134 is an apocalyptic number.

21972911134 is a deficient number, since it is larger than the sum of its proper divisors (10989228506).

21972911134 is a wasteful number, since it uses less digits than its factorization.

21972911134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924314.

The product of its digits is 27216, while the sum is 40.

The spelling of 21972911134 in words is "twenty-one billion, nine hundred seventy-two million, nine hundred eleven thousand, one hundred thirty-four".