121102011021999 has 32 divisors (see below), whose sum is σ = 187786113292800. Its totient is φ = 67992966288000.

The previous prime is 121102011021983. The next prime is 121102011022019. The reversal of 121102011021999 is 999120110201121.

It is not a de Polignac number, because 121102011021999 - 2⁴ = 121102011021983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102011421999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217648324 + ... + 218204025.

It is an arithmetic number, because the mean of its divisors is an integer number (5868316040400).

Almost surely, 2^{121102011021999} is an apocalyptic number.

121102011021999 is a deficient number, since it is larger than the sum of its proper divisors (66684102270801).

121102011021999 is a wasteful number, since it uses less digits than its factorization.

121102011021999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435852591.

The product of its (nonzero) digits is 5832, while the sum is 39.

The spelling of 121102011021999 in words is "one hundred twenty-one trillion, one hundred two billion, eleven million, twenty-one thousand, nine hundred ninety-nine".