121002112031111 has 8 divisors (see below), whose sum is σ = 126263776385664. Its totient is φ = 115740506256760.

The previous prime is 121002112031077. The next prime is 121002112031123. The reversal of 121002112031111 is 111130211200121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121002112031111 - 2²² = 121002107836807 is a prime.

It is a super-2 number, since 2×121002112031111² (a number of 29 digits) contains 22 as substring.

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 121002112031111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002112021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10397861 + ... + 18711486.

It is an arithmetic number, because the mean of its divisors is an integer number (15782972048208).

Almost surely, 2^{121002112031111} is an apocalyptic number.

121002112031111 is a deficient number, since it is larger than the sum of its proper divisors (5261664354553).

121002112031111 is a wasteful number, since it uses less digits than its factorization.

121002112031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29290101.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 121002112031111 its reverse (111130211200121), we get a palindrome (232132323231232).

The spelling of 121002112031111 in words is "one hundred twenty-one trillion, two billion, one hundred twelve million, thirty-one thousand, one hundred eleven".