121011101199 has 8 divisors (see below), whose sum is σ = 179275705520. Its totient is φ = 80674067448.

The previous prime is 121011101177. The next prime is 121011101273. The reversal of 121011101199 is 991101110121.

It is not a de Polignac number, because 121011101199 - 2¹⁷ = 121010970127 is a prime.

It is a super-2 number, since 2×121011101199² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4481892637 = 121011101199 / (1 + 2 + 1 + 0 + 1 + 1 + 1 + 0 + 1 + 1 + 9 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011101399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240946292 + ... + 2240946345.

It is an arithmetic number, because the mean of its divisors is an integer number (22409463190).

Almost surely, 2^121011101199 is an apocalyptic number.

121011101199 is a deficient number, since it is larger than the sum of its proper divisors (58264604321).

121011101199 is an equidigital number, since it uses as much as digits as its factorization.

121011101199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481892646 (or 4481892640 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 27.

The spelling of 121011101199 in words is "one hundred twenty-one billion, eleven million, one hundred one thousand, one hundred ninety-nine".