211701220552 has 16 divisors (see below), whose sum is σ = 410627367900. Its totient is φ = 102200589120.

The previous prime is 211701220547. The next prime is 211701220567. The reversal of 211701220552 is 255022107112.

It can be written as a sum of positive squares in 2 ways, for example, as 194475708036 + 17225512516 = 440994^2 + 131246^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211701220552.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 456252399 + ... + 456252862.

Almost surely, 2^211701220552 is an apocalyptic number.

It is an amenable number.

211701220552 is a deficient number, since it is larger than the sum of its proper divisors (198926147348).

211701220552 is a wasteful number, since it uses less digits than its factorization.

211701220552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912505296 (or 912505292 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

Adding to 211701220552 its reverse (255022107112), we get a palindrome (466723327664).

The spelling of 211701220552 in words is "two hundred eleven billion, seven hundred one million, two hundred twenty thousand, five hundred fifty-two".