111212110112951 has 2 divisors, whose sum is σ = 111212110112952. Its totient is φ = 111212110112950.

The previous prime is 111212110112869. The next prime is 111212110112993. The reversal of 111212110112951 is 159211011212111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111212110112951 - 2²² = 111212105918647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212110012951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606055056475 + 55606055056476.

It is an arithmetic number, because the mean of its divisors is an integer number (55606055056476).

Almost surely, 2^{111212110112951} is an apocalyptic number.

111212110112951 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212110112951 is an equidigital number, since it uses as much as digits as its factorization.

111212110112951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 29.

The spelling of 111212110112951 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred ten million, one hundred twelve thousand, nine hundred fifty-one".