101111231999 has 2 divisors, whose sum is σ = 101111232000. Its totient is φ = 101111231998.

The previous prime is 101111231981. The next prime is 101111232031. The reversal of 101111231999 is 999132111101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101111231999 - 2⁸ = 101111231743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101111231909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555615999 + 50555616000.

It is an arithmetic number, because the mean of its divisors is an integer number (50555616000).

Almost surely, 2^101111231999 is an apocalyptic number.

101111231999 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111231999 is an equidigital number, since it uses as much as digits as its factorization.

101111231999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 38.

The spelling of 101111231999 in words is "one hundred one billion, one hundred eleven million, two hundred thirty-one thousand, nine hundred ninety-nine".