213212310061 has 2 divisors, whose sum is σ = 213212310062. Its totient is φ = 213212310060.

The previous prime is 213212310023. The next prime is 213212310107. The reversal of 213212310061 is 160013212312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212973020100 + 239289961 = 461490^2 + 15469^2 .

It is a cyclic number.

It is not a de Polignac number, because 213212310061 - 2²¹ = 213210212909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213212311061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106606155030 + 106606155031.

It is an arithmetic number, because the mean of its divisors is an integer number (106606155031).

Almost surely, 2^213212310061 is an apocalyptic number.

It is an amenable number.

213212310061 is a deficient number, since it is larger than the sum of its proper divisors (1).

213212310061 is an equidigital number, since it uses as much as digits as its factorization.

213212310061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 213212310061 its reverse (160013212312), we get a palindrome (373225522373).

The spelling of 213212310061 in words is "two hundred thirteen billion, two hundred twelve million, three hundred ten thousand, sixty-one".