121001101220999 has 4 divisors (see below), whose sum is σ = 121051539364800. Its totient is φ = 120950663077200.

The previous prime is 121001101220981. The next prime is 121001101221019. The reversal of 121001101220999 is 999022101100121.

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

It is a cyclic number.

It is not a de Polignac number, because 121001101220999 - 2²⁴ = 121001084443783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001101229999) 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, 25219068302 + ... + 25219073099.

It is an arithmetic number, because the mean of its divisors is an integer number (30262884841200).

Almost surely, 2^{121001101220999} is an apocalyptic number.

121001101220999 is a deficient number, since it is larger than the sum of its proper divisors (50438143801).

121001101220999 is an equidigital number, since it uses as much as digits as its factorization.

121001101220999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50438143800.

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

The spelling of 121001101220999 in words is "one hundred twenty-one trillion, one billion, one hundred one million, two hundred twenty thousand, nine hundred ninety-nine".