121082444280121 has 4 divisors (see below), whose sum is σ = 121895078134500. Its totient is φ = 120269810425744.

The previous prime is 121082444279989. The next prime is 121082444280131.

121082444280121 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40808639290896 + 80273804989225 = 6388164^2 + 8959565^2 .

It is a cyclic number.

It is not a de Polignac number, because 121082444280121 - 2²¹ = 121082442182969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121082444280131) 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, 406316926966 + ... + 406316927263.

It is an arithmetic number, because the mean of its divisors is an integer number (30473769533625).

Almost surely, 2^{121082444280121} is an apocalyptic number.

It is an amenable number.

121082444280121 is a deficient number, since it is larger than the sum of its proper divisors (812633854379).

121082444280121 is an equidigital number, since it uses as much as digits as its factorization.

121082444280121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812633854378.

The product of its (nonzero) digits is 65536, while the sum is 40.

The spelling of 121082444280121 in words is "one hundred twenty-one trillion, eighty-two billion, four hundred forty-four million, two hundred eighty thousand, one hundred twenty-one".