121110100122121 has 4 divisors (see below), whose sum is σ = 132120109224144. Its totient is φ = 110100091020100.

The previous prime is 121110100122113. The next prime is 121110100122163. The reversal of 121110100122121 is 121221001011121.

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 121110100122121 - 2³ = 121110100122113 is a prime.

It is a super-2 number, since 2×121110100122121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121110100122095 and 121110100122104.

It is not an unprimeable number, because it can be changed into a prime (121110100122101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5505004550995 + ... + 5505004551016.

It is an arithmetic number, because the mean of its divisors is an integer number (33030027306036).

Almost surely, 2^{121110100122121} is an apocalyptic number.

121110100122121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121110100122121 is a deficient number, since it is larger than the sum of its proper divisors (11010009102023).

121110100122121 is a wasteful number, since it uses less digits than its factorization.

121110100122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010009102022.

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

Adding to 121110100122121 its reverse (121221001011121), we get a palindrome (242331101133242).

The spelling of 121110100122121 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred million, one hundred twenty-two thousand, one hundred twenty-one".