10111220120999 has 2 divisors, whose sum is σ = 10111220121000. Its totient is φ = 10111220120998.

The previous prime is 10111220120993. The next prime is 10111220121017. The reversal of 10111220120999 is 99902102211101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111220120999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111220120993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055610060499 + 5055610060500.

It is an arithmetic number, because the mean of its divisors is an integer number (5055610060500).

Almost surely, 2^{10111220120999} is an apocalyptic number.

10111220120999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111220120999 is an equidigital number, since it uses as much as digits as its factorization.

10111220120999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 10111220120999 in words is "ten trillion, one hundred eleven billion, two hundred twenty million, one hundred twenty thousand, nine hundred ninety-nine".