212161428229087 has 2 divisors, whose sum is σ = 212161428229088. Its totient is φ = 212161428229086.

The previous prime is 212161428229073. The next prime is 212161428229123. The reversal of 212161428229087 is 780922824161212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212161428229087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212161428229027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106080714114543 + 106080714114544.

It is an arithmetic number, because the mean of its divisors is an integer number (106080714114544).

Almost surely, 2^{212161428229087} is an apocalyptic number.

212161428229087 is a deficient number, since it is larger than the sum of its proper divisors (1).

212161428229087 is an equidigital number, since it uses as much as digits as its factorization.

212161428229087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 212161428229087 in words is "two hundred twelve trillion, one hundred sixty-one billion, four hundred twenty-eight million, two hundred twenty-nine thousand, eighty-seven".