212883077 has 4 divisors (see below), whose sum is σ = 232236096. Its totient is φ = 193530060.

The previous prime is 212883059. The next prime is 212883079. The reversal of 212883077 is 770388212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212883077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212883077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212883079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9676493 + ... + 9676514.

It is an arithmetic number, because the mean of its divisors is an integer number (58059024).

Almost surely, 2^212883077 is an apocalyptic number.

It is an amenable number.

212883077 is a deficient number, since it is larger than the sum of its proper divisors (19353019).

212883077 is a wasteful number, since it uses less digits than its factorization.

212883077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19353018.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 212883077 is about 14590.5132534808. The cubic root of 212883077 is about 597.0999657708.

The spelling of 212883077 in words is "two hundred twelve million, eight hundred eighty-three thousand, seventy-seven".