101111020121999 has 2 divisors, whose sum is σ = 101111020122000. Its totient is φ = 101111020121998.

The previous prime is 101111020121933. The next prime is 101111020122103. The reversal of 101111020121999 is 999121020111101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101111020121999 is a prime.

It is a super-2 number, since 2×101111020121999² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101111020721999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555510060999 + 50555510061000.

It is an arithmetic number, because the mean of its divisors is an integer number (50555510061000).

Almost surely, 2^{101111020121999} is an apocalyptic number.

101111020121999 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111020121999 is an equidigital number, since it uses as much as digits as its factorization.

101111020121999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 38.

The spelling of 101111020121999 in words is "one hundred one trillion, one hundred eleven billion, twenty million, one hundred twenty-one thousand, nine hundred ninety-nine".