212112151577 has 2 divisors, whose sum is σ = 212112151578. Its totient is φ = 212112151576.

The previous prime is 212112151543. The next prime is 212112151609. The reversal of 212112151577 is 775151211212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200331437056 + 11780714521 = 447584^2 + 108539^2 .

It is a cyclic number.

It is not a de Polignac number, because 212112151577 - 2²⁸ = 211843716121 is a prime.

It is not a weakly prime, because it can be changed into another prime (212112151507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056075788 + 106056075789.

It is an arithmetic number, because the mean of its divisors is an integer number (106056075789).

Almost surely, 2^212112151577 is an apocalyptic number.

It is an amenable number.

212112151577 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112151577 is an equidigital number, since it uses as much as digits as its factorization.

212112151577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9800, while the sum is 35.

Adding to 212112151577 its reverse (775151211212), we get a palindrome (987263362789).

The spelling of 212112151577 in words is "two hundred twelve billion, one hundred twelve million, one hundred fifty-one thousand, five hundred seventy-seven".