111002102012121 has 4 divisors (see below), whose sum is σ = 148002802682832. Its totient is φ = 74001401341412.

The previous prime is 111002102012111. The next prime is 111002102012149. The reversal of 111002102012121 is 121210201200111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111002102012121 - 2²⁵ = 111002068457689 is a prime.

It is a super-2 number, since 2×111002102012121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111002102012121.

It is not an unprimeable number, because it can be changed into a prime (111002102012111) 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 3 ways as a sum of consecutive naturals, for example, 18500350335351 + ... + 18500350335356.

It is an arithmetic number, because the mean of its divisors is an integer number (37000700670708).

Almost surely, 2^{111002102012121} is an apocalyptic number.

It is an amenable number.

111002102012121 is a deficient number, since it is larger than the sum of its proper divisors (37000700670711).

111002102012121 is an equidigital number, since it uses as much as digits as its factorization.

111002102012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37000700670710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111002102012121 its reverse (121210201200111), we get a palindrome (232212303212232).

The spelling of 111002102012121 in words is "one hundred eleven trillion, two billion, one hundred two million, twelve thousand, one hundred twenty-one".