212112112061 has 2 divisors, whose sum is σ = 212112112062. Its totient is φ = 212112112060.

The previous prime is 212112112033. The next prime is 212112112111. The reversal of 212112112061 is 160211211212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188212807225 + 23899304836 = 433835^2 + 154594^2 .

It is a cyclic number.

It is not a de Polignac number, because 212112112061 - 2¹⁰ = 212112111037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212112118061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056056030 + 106056056031.

It is an arithmetic number, because the mean of its divisors is an integer number (106056056031).

Almost surely, 2^212112112061 is an apocalyptic number.

It is an amenable number.

212112112061 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112112061 is an equidigital number, since it uses as much as digits as its factorization.

212112112061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 212112112061 its reverse (160211211212), we get a palindrome (372323323273).

The spelling of 212112112061 in words is "two hundred twelve billion, one hundred twelve million, one hundred twelve thousand, sixty-one".