212323009977 has 24 divisors (see below), whose sum is σ = 330298270848. Its totient is φ = 130653180000.

The previous prime is 212323009967. The next prime is 212323009979. The reversal of 212323009977 is 779900323212.

It is a happy number.

212323009977 is a `hidden beast` number, since 21 + 232 + 300 + 9 + 97 + 7 = 666.

212323009977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212323009977 - 2⁸ = 212323009721 is a prime.

It is a super-4 number, since 4×212323009977⁴ (a number of 46 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (212323009979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2799952 + ... + 2874782.

It is an arithmetic number, because the mean of its divisors is an integer number (13762427952).

Almost surely, 2^212323009977 is an apocalyptic number.

It is an amenable number.

212323009977 is a deficient number, since it is larger than the sum of its proper divisors (117975260871).

212323009977 is a wasteful number, since it uses less digits than its factorization.

212323009977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99101 (or 99098 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The spelling of 212323009977 in words is "two hundred twelve billion, three hundred twenty-three million, nine thousand, nine hundred seventy-seven".