120100121001 has 24 divisors (see below), whose sum is σ = 200976422400. Its totient is φ = 67688519616.

The previous prime is 120100120961. The next prime is 120100121059. The reversal of 120100121001 is 100121001021.

It is a happy number.

It is not a de Polignac number, because 120100121001 - 2⁶ = 120100120937 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120100121081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13052601 + ... + 13061798.

It is an arithmetic number, because the mean of its divisors is an integer number (8374017600).

Almost surely, 2^120100121001 is an apocalyptic number.

It is an amenable number.

120100121001 is a deficient number, since it is larger than the sum of its proper divisors (80876301399).

120100121001 is a wasteful number, since it uses less digits than its factorization.

120100121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26114485 (or 26114482 counting only the distinct ones).

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

Adding to 120100121001 its reverse (100121001021), we get a palindrome (220221122022).

The spelling of 120100121001 in words is "one hundred twenty billion, one hundred million, one hundred twenty-one thousand, one".