212634101 has 2 divisors, whose sum is σ = 212634102. Its totient is φ = 212634100.

The previous prime is 212634089. The next prime is 212634133. The reversal of 212634101 is 101436212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211731601 + 902500 = 14551^2 + 950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212634101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212634151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106317050 + 106317051.

It is an arithmetic number, because the mean of its divisors is an integer number (106317051).

Almost surely, 2^212634101 is an apocalyptic number.

It is an amenable number.

212634101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212634101 is an equidigital number, since it uses as much as digits as its factorization.

212634101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 212634101 is about 14581.9786380313. The cubic root of 212634101 is about 596.8670968536.

The spelling of 212634101 in words is "two hundred twelve million, six hundred thirty-four thousand, one hundred one".