212498077 has 4 divisors (see below), whose sum is σ = 231816096. Its totient is φ = 193180060.

The previous prime is 212498063. The next prime is 212498089. The reversal of 212498077 is 770894212.

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 not a de Polignac number, because 212498077 - 2⁷ = 212497949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212498977) 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, 9658993 + ... + 9659014.

It is an arithmetic number, because the mean of its divisors is an integer number (57954024).

Almost surely, 2^212498077 is an apocalyptic number.

It is an amenable number.

212498077 is a deficient number, since it is larger than the sum of its proper divisors (19318019).

212498077 is a wasteful number, since it uses less digits than its factorization.

212498077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19318018.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 212498077 is about 14577.3137786082. The cubic root of 212498077 is about 596.7397959048.

The spelling of 212498077 in words is "two hundred twelve million, four hundred ninety-eight thousand, seventy-seven".