212570375077021 has 16 divisors (see below), whose sum is σ = 242396750761200. Its totient is φ = 184669811232768.

The previous prime is 212570375076979. The next prime is 212570375077111. The reversal of 212570375077021 is 120770573075212.

212570375077021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 44892867645796 + 167677507431225 = 6700214^2 + 12949035^2 .

It is a cyclic number.

It is not a de Polignac number, because 212570375077021 - 2²¹ = 212570372979869 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 (212570375177021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11385976 + ... + 23553793.

It is an arithmetic number, because the mean of its divisors is an integer number (15149796922575).

Almost surely, 2^{212570375077021} is an apocalyptic number.

It is an amenable number.

212570375077021 is a deficient number, since it is larger than the sum of its proper divisors (29826375684179).

212570375077021 is a wasteful number, since it uses less digits than its factorization.

212570375077021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34967328.

The product of its (nonzero) digits is 1440600, while the sum is 49.

The spelling of 212570375077021 in words is "two hundred twelve trillion, five hundred seventy billion, three hundred seventy-five million, seventy-seven thousand, twenty-one".