120120101001 has 48 divisors (see below), whose sum is σ = 195228109440. Its totient is φ = 70796816640.

The previous prime is 120120100979. The next prime is 120120101041. The reversal of 120120101001 is 100101021021.

It is a happy number.

It is not a de Polignac number, because 120120101001 - 2¹⁷ = 120119969929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (120120101041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211206 + ... + 533711.

It is an arithmetic number, because the mean of its divisors is an integer number (4067252280).

Almost surely, 2^120120101001 is an apocalyptic number.

It is an amenable number.

120120101001 is a deficient number, since it is larger than the sum of its proper divisors (75108008439).

120120101001 is a wasteful number, since it uses less digits than its factorization.

120120101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745006 (or 745003 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120120101001 its reverse (100101021021), we get a palindrome (220221122022).

The spelling of 120120101001 in words is "one hundred twenty billion, one hundred twenty million, one hundred one thousand, one".