111012021010121 has 16 divisors (see below), whose sum is σ = 140300551022208. Its totient is φ = 85317902640000.

The previous prime is 111012021010117. The next prime is 111012021010127. The reversal of 111012021010121 is 121010120210111.

It is a cyclic number.

It is not a de Polignac number, because 111012021010121 - 2² = 111012021010117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012021010096 and 111012021010105.

It is not an unprimeable number, because it can be changed into a prime (111012021010127) 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, 9874751630 + ... + 9874762871.

It is an arithmetic number, because the mean of its divisors is an integer number (8768784438888).

Almost surely, 2^{111012021010121} is an apocalyptic number.

111012021010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111012021010121 is a deficient number, since it is larger than the sum of its proper divisors (29288530012087).

111012021010121 is a wasteful number, since it uses less digits than its factorization.

111012021010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19749514592.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111012021010121 its reverse (121010120210111), we get a palindrome (232022141220232).

The spelling of 111012021010121 in words is "one hundred eleven trillion, twelve billion, twenty-one million, ten thousand, one hundred twenty-one".