121002111101121 has 16 divisors (see below), whose sum is σ = 165088946979264. Its totient is φ = 78791692722624.

The previous prime is 121002111101117. The next prime is 121002111101231. The reversal of 121002111101121 is 121101111200121.

It is not a de Polignac number, because 121002111101121 - 2² = 121002111101117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121002111101121.

It is not an unprimeable number, because it can be changed into a prime (121002111101111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25981315 + ... + 30282551.

It is an arithmetic number, because the mean of its divisors is an integer number (10318059186204).

Almost surely, 2^{121002111101121} is an apocalyptic number.

It is an amenable number.

121002111101121 is a deficient number, since it is larger than the sum of its proper divisors (44086835878143).

121002111101121 is a wasteful number, since it uses less digits than its factorization.

121002111101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519360.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121002111101121 its reverse (121101111200121), we get a palindrome (242103222301242).

The spelling of 121002111101121 in words is "one hundred twenty-one trillion, two billion, one hundred eleven million, one hundred one thousand, one hundred twenty-one".