121110120212021 has 4 divisors (see below), whose sum is σ = 121459140731712. Its totient is φ = 120761099692332.

The previous prime is 121110120211999. The next prime is 121110120212071. The reversal of 121110120212021 is 120212021011121.

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 121110120212021 - 2³⁰ = 121109046470197 is a prime.

It is a super-2 number, since 2×121110120212021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110120212071) 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, 174510259325 + ... + 174510260018.

It is an arithmetic number, because the mean of its divisors is an integer number (30364785182928).

Almost surely, 2^{121110120212021} is an apocalyptic number.

It is an amenable number.

121110120212021 is a deficient number, since it is larger than the sum of its proper divisors (349020519691).

121110120212021 is an equidigital number, since it uses as much as digits as its factorization.

121110120212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349020519690.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121110120212021 its reverse (120212021011121), we get a palindrome (241322141223142).

The spelling of 121110120212021 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred twenty million, two hundred twelve thousand, twenty-one".