120111001002121 has 4 divisors (see below), whose sum is σ = 120578358982932. Its totient is φ = 119643643021312.

The previous prime is 120111001002049. The next prime is 120111001002133. The reversal of 120111001002121 is 121200100111021.

It is a happy number.

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 87950635240000 + 32160365762121 = 9378200^2 + 5671011^2 .

It is a cyclic number.

It is not a de Polignac number, because 120111001002121 - 2⁷ = 120111001001993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120111001002521) 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, 233678990020 + ... + 233678990533.

It is an arithmetic number, because the mean of its divisors is an integer number (30144589745733).

Almost surely, 2^{120111001002121} is an apocalyptic number.

It is an amenable number.

120111001002121 is a deficient number, since it is larger than the sum of its proper divisors (467357980811).

120111001002121 is an equidigital number, since it uses as much as digits as its factorization.

120111001002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467357980810.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120111001002121 its reverse (121200100111021), we get a palindrome (241311101113142).

The spelling of 120111001002121 in words is "one hundred twenty trillion, one hundred eleven billion, one million, two thousand, one hundred twenty-one".