121002112011 has 16 divisors (see below), whose sum is σ = 176501681280. Its totient is φ = 73126859520.

The previous prime is 121002111991. The next prime is 121002112051. The reversal of 121002112011 is 110211200121.

It is not a de Polignac number, because 121002112011 - 2²⁵ = 120968557579 is a prime.

It is a super-2 number, since 2×121002112011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121002112051) 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, 5182021 + ... + 5205318.

It is an arithmetic number, because the mean of its divisors is an integer number (11031355080).

Almost surely, 2^121002112011 is an apocalyptic number.

121002112011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121002112011 is a deficient number, since it is larger than the sum of its proper divisors (55499569269).

121002112011 is a wasteful number, since it uses less digits than its factorization.

121002112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10387706.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121002112011 its reverse (110211200121), we get a palindrome (231213312132).

The spelling of 121002112011 in words is "one hundred twenty-one billion, two million, one hundred twelve thousand, eleven".