210842523922 has 4 divisors (see below), whose sum is σ = 316263785886. Its totient is φ = 105421261960.

The previous prime is 210842523907. The next prime is 210842523967. The reversal of 210842523922 is 229325248012.

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

It can be written as a sum of positive squares in only one way, i.e., 163823372001 + 47019151921 = 404751^2 + 216839^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52710630979 + ... + 52710630982.

Almost surely, 2^210842523922 is an apocalyptic number.

210842523922 is a deficient number, since it is larger than the sum of its proper divisors (105421261964).

210842523922 is a wasteful number, since it uses less digits than its factorization.

210842523922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105421261963.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 210842523922 in words is "two hundred ten billion, eight hundred forty-two million, five hundred twenty-three thousand, nine hundred twenty-two".