101121001211999 has 4 divisors (see below), whose sum is σ = 101126884119480. Its totient is φ = 101115118304520.

The previous prime is 101121001211977. The next prime is 101121001212017. The reversal of 101121001211999 is 999112100121101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101121001211999 is a prime.

It is a super-2 number, since 2×101121001211999² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121001211299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2941427957 + ... + 2941462334.

It is an arithmetic number, because the mean of its divisors is an integer number (25281721029870).

Almost surely, 2^{101121001211999} is an apocalyptic number.

101121001211999 is a deficient number, since it is larger than the sum of its proper divisors (5882907481).

101121001211999 is an equidigital number, since it uses as much as digits as its factorization.

101121001211999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882907480.

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

The spelling of 101121001211999 in words is "one hundred one trillion, one hundred twenty-one billion, one million, two hundred eleven thousand, nine hundred ninety-nine".