121110112101021 has 8 divisors (see below), whose sum is σ = 161514973758624. Its totient is φ = 80722662588720.

The previous prime is 121110112100993. The next prime is 121110112101073. The reversal of 121110112101021 is 120101211011121.

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

It is not a de Polignac number, because 121110112101021 - 2¹⁹ = 121110111576733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110112101521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4353020095 + ... + 4353047916.

It is an arithmetic number, because the mean of its divisors is an integer number (20189371719828).

Almost surely, 2^{121110112101021} is an apocalyptic number.

It is an amenable number.

121110112101021 is a deficient number, since it is larger than the sum of its proper divisors (40404861657603).

121110112101021 is an equidigital number, since it uses as much as digits as its factorization.

121110112101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8706072651.

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

Adding to 121110112101021 its reverse (120101211011121), we get a palindrome (241211323112142).

The spelling of 121110112101021 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred twelve million, one hundred one thousand, twenty-one".