121112100121099 has 4 divisors (see below), whose sum is σ = 121115624031640. Its totient is φ = 121108576210560.

The previous prime is 121112100121087. The next prime is 121112100121123. The reversal of 121112100121099 is 990121001211121.

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 121112100121099 - 2¹⁷ = 121112099990027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121112100121099.

It is not an unprimeable number, because it can be changed into a prime (121112100121039) 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, 1761903717 + ... + 1761972454.

It is an arithmetic number, because the mean of its divisors is an integer number (30278906007910).

Almost surely, 2^{121112100121099} is an apocalyptic number.

121112100121099 is a deficient number, since it is larger than the sum of its proper divisors (3523910541).

121112100121099 is an equidigital number, since it uses as much as digits as its factorization.

121112100121099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523910540.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 121112100121099 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred million, one hundred twenty-one thousand, ninety-nine".