212102099687 has 2 divisors, whose sum is σ = 212102099688. Its totient is φ = 212102099686.

The previous prime is 212102099669. The next prime is 212102099723. The reversal of 212102099687 is 786990201212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212102099687 - 2⁸ = 212102099431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212102099387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051049843 + 106051049844.

It is an arithmetic number, because the mean of its divisors is an integer number (106051049844).

Almost surely, 2^212102099687 is an apocalyptic number.

212102099687 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102099687 is an equidigital number, since it uses as much as digits as its factorization.

212102099687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 212102099687 in words is "two hundred twelve billion, one hundred two million, ninety-nine thousand, six hundred eighty-seven".