212717720075 has 48 divisors (see below), whose sum is σ = 322230375936. Its totient is φ = 136118611200.

The previous prime is 212717719999. The next prime is 212717720087. The reversal of 212717720075 is 570027717212.

212717720075 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 212717720075 - 2²⁰ = 212716671499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 479477 + ... + 809526.

It is an arithmetic number, because the mean of its divisors is an integer number (6713132832).

Almost surely, 2^212717720075 is an apocalyptic number.

212717720075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

212717720075 is a deficient number, since it is larger than the sum of its proper divisors (109512655861).

212717720075 is a wasteful number, since it uses less digits than its factorization.

212717720075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289084 (or 1289079 counting only the distinct ones).

The product of its (nonzero) digits is 96040, while the sum is 41.

The spelling of 212717720075 in words is "two hundred twelve billion, seven hundred seventeen million, seven hundred twenty thousand, seventy-five".