212660501 has 2 divisors, whose sum is σ = 212660502. Its totient is φ = 212660500.

The previous prime is 212660453. The next prime is 212660533. The reversal of 212660501 is 105066212.

212660501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193071025 + 19589476 = 13895^2 + 4426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212660501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212660801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106330250 + 106330251.

It is an arithmetic number, because the mean of its divisors is an integer number (106330251).

Almost surely, 2^212660501 is an apocalyptic number.

It is an amenable number.

212660501 is a deficient number, since it is larger than the sum of its proper divisors (1).

212660501 is an equidigital number, since it uses as much as digits as its factorization.

212660501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 212660501 is about 14582.8838368822. The cubic root of 212660501 is about 596.8917975628.

The spelling of 212660501 in words is "two hundred twelve million, six hundred sixty thousand, five hundred one".