21214196822964 has 24 divisors (see below), whose sum is σ = 49552620566848. Its totient is φ = 7063852086720.

The previous prime is 21214196822939. The next prime is 21214196822983. The reversal of 21214196822964 is 46922869141212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943345072 + ... + 943367559.

Almost surely, 2^{21214196822964} is an apocalyptic number.

It is an amenable number.

21214196822964 is an abundant number, since it is smaller than the sum of its proper divisors (28338423743884).

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

21214196822964 is a wasteful number, since it uses less digits than its factorization.

21214196822964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886713575 (or 1886713573 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 57.

The spelling of 21214196822964 in words is "twenty-one trillion, two hundred fourteen billion, one hundred ninety-six million, eight hundred twenty-two thousand, nine hundred sixty-four".