120011121002121 has 4 divisors (see below), whose sum is σ = 160014828002832. Its totient is φ = 80007414001412.

The previous prime is 120011121002111. The next prime is 120011121002137. The reversal of 120011121002121 is 121200121110021.

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 120011121002121 - 2⁵ = 120011121002089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120011121002121.

It is not an unprimeable number, because it can be changed into a prime (120011121002111) 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, 20001853500351 + ... + 20001853500356.

It is an arithmetic number, because the mean of its divisors is an integer number (40003707000708).

Almost surely, 2^{120011121002121} is an apocalyptic number.

It is an amenable number.

120011121002121 is a deficient number, since it is larger than the sum of its proper divisors (40003707000711).

120011121002121 is an equidigital number, since it uses as much as digits as its factorization.

120011121002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40003707000710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120011121002121 its reverse (121200121110021), we get a palindrome (241211242112142).

The spelling of 120011121002121 in words is "one hundred twenty trillion, eleven billion, one hundred twenty-one million, two thousand, one hundred twenty-one".