120100001001 has 16 divisors (see below), whose sum is σ = 164616138624. Its totient is φ = 77829341184.

The previous prime is 120100000961. The next prime is 120100001029. The reversal of 120100001001 is 100100001021.

It is not a de Polignac number, because 120100001001 - 2¹³ = 120099992809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127100001001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390936 + ... + 626921.

It is an arithmetic number, because the mean of its divisors is an integer number (10288508664).

Almost surely, 2^120100001001 is an apocalyptic number.

It is an amenable number.

120100001001 is a deficient number, since it is larger than the sum of its proper divisors (44516137623).

120100001001 is a wasteful number, since it uses less digits than its factorization.

120100001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018960.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 120100001001 its reverse (100100001021), we get a palindrome (220200002022).

The spelling of 120100001001 in words is "one hundred twenty billion, one hundred million, one thousand, one".