212655802 has 4 divisors (see below), whose sum is σ = 318983706. Its totient is φ = 106327900.

The previous prime is 212655791. The next prime is 212655841. The reversal of 212655802 is 208556212.

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., 181953121 + 30702681 = 13489^2 + 5541^2 .

It is a Smith number, since the sum of its digits (31) 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53163949 + ... + 53163952.

Almost surely, 2^212655802 is an apocalyptic number.

212655802 is a deficient number, since it is larger than the sum of its proper divisors (106327904).

212655802 is a wasteful number, since it uses less digits than its factorization.

212655802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106327903.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 212655802 is about 14582.7227224548. The cubic root of 212655802 is about 596.8874011732.

The spelling of 212655802 in words is "two hundred twelve million, six hundred fifty-five thousand, eight hundred two".