211650072020522 has 4 divisors (see below), whose sum is σ = 317475108030786. Its totient is φ = 105825036010260.

The previous prime is 211650072020521. The next prime is 211650072020567. The reversal of 211650072020522 is 225020270056112.

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., 158320338016681 + 53329734003841 = 12582541^2 + 7302721^2 .

It is not an unprimeable number, because it can be changed into a prime (211650072020521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52912518005129 + ... + 52912518005132.

Almost surely, 2^{211650072020522} is an apocalyptic number.

211650072020522 is a deficient number, since it is larger than the sum of its proper divisors (105825036010264).

211650072020522 is a wasteful number, since it uses less digits than its factorization.

211650072020522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105825036010263.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 211650072020522 in words is "two hundred eleven trillion, six hundred fifty billion, seventy-two million, twenty thousand, five hundred twenty-two".