121001033121 has 4 divisors (see below), whose sum is σ = 161334710832. Its totient is φ = 80667355412.

The previous prime is 121001033081. The next prime is 121001033129. The reversal of 121001033121 is 121330100121.

It is a happy number.

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 121001033121 - 2⁶ = 121001033057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121001033121.

It is not an unprimeable number, because it can be changed into a prime (121001033129) 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, 20166838851 + ... + 20166838856.

It is an arithmetic number, because the mean of its divisors is an integer number (40333677708).

Almost surely, 2^121001033121 is an apocalyptic number.

It is an amenable number.

121001033121 is a deficient number, since it is larger than the sum of its proper divisors (40333677711).

121001033121 is an equidigital number, since it uses as much as digits as its factorization.

121001033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40333677710.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121001033121 its reverse (121330100121), we get a palindrome (242331133242).

The spelling of 121001033121 in words is "one hundred twenty-one billion, one million, thirty-three thousand, one hundred twenty-one".