213212101061 has 2 divisors, whose sum is σ = 213212101062. Its totient is φ = 213212101060.

The previous prime is 213212101031. The next prime is 213212101139. The reversal of 213212101061 is 160101212312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115111596961 + 98100504100 = 339281^2 + 313210^2 .

It is a cyclic number.

It is not a de Polignac number, because 213212101061 - 2²² = 213207906757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213212101031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106606050530 + 106606050531.

It is an arithmetic number, because the mean of its divisors is an integer number (106606050531).

Almost surely, 2^213212101061 is an apocalyptic number.

It is an amenable number.

213212101061 is a deficient number, since it is larger than the sum of its proper divisors (1).

213212101061 is an equidigital number, since it uses as much as digits as its factorization.

213212101061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 213212101061 its reverse (160101212312), we get a palindrome (373313313373).

The spelling of 213212101061 in words is "two hundred thirteen billion, two hundred twelve million, one hundred one thousand, sixty-one".