120012100001 has 4 divisors (see below), whose sum is σ = 120116187972. Its totient is φ = 119908012032.

The previous prime is 120012099983. The next prime is 120012100003. The reversal of 120012100001 is 100001210021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100001210021 = 661 ⋅151287761.

It can be written as a sum of positive squares in 2 ways, for example, as 94396417600 + 25615682401 = 307240^2 + 160049^2 .

It is a cyclic number.

It is not a de Polignac number, because 120012100001 - 2¹⁰ = 120012098977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120012100003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52042256 + ... + 52044561.

It is an arithmetic number, because the mean of its divisors is an integer number (30029046993).

Almost surely, 2^120012100001 is an apocalyptic number.

It is an amenable number.

120012100001 is a deficient number, since it is larger than the sum of its proper divisors (104087971).

120012100001 is a wasteful number, since it uses less digits than its factorization.

120012100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104087970.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 120012100001 its reverse (100001210021), we get a palindrome (220013310022).

The spelling of 120012100001 in words is "one hundred twenty billion, twelve million, one hundred thousand, one".