121101231001 has 4 divisors (see below), whose sum is σ = 124054919604. Its totient is φ = 118147542400.

The previous prime is 121101230977. The next prime is 121101231007. The reversal of 121101231001 is 100132101121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100132101121 = 13 ⋅7702469317.

It can be written as a sum of positive squares in 2 ways, for example, as 60868291225 + 60232939776 = 246715^2 + 245424^2 .

It is a cyclic number.

It is not a de Polignac number, because 121101231001 - 2²⁹ = 120564360089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121101231007) 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, 1476844240 + ... + 1476844321.

It is an arithmetic number, because the mean of its divisors is an integer number (31013729901).

Almost surely, 2^121101231001 is an apocalyptic number.

It is an amenable number.

121101231001 is a deficient number, since it is larger than the sum of its proper divisors (2953688603).

121101231001 is an equidigital number, since it uses as much as digits as its factorization.

121101231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953688602.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121101231001 its reverse (100132101121), we get a palindrome (221233332122).

The spelling of 121101231001 in words is "one hundred twenty-one billion, one hundred one million, two hundred thirty-one thousand, one".