120001251120 has 40 divisors (see below), whose sum is σ = 372003879216. Its totient is φ = 32000333568.

The previous prime is 120001251059. The next prime is 120001251121. The reversal of 120001251120 is 21152100021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120001251120.

It is not an unprimeable number, because it can be changed into a prime (120001251121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250002367 + ... + 250002846.

Almost surely, 2^120001251120 is an apocalyptic number.

120001251120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001251120 is an abundant number, since it is smaller than the sum of its proper divisors (252002628096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120001251120 is a wasteful number, since it uses less digits than its factorization.

120001251120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500005229 (or 500005223 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 120001251120 its reverse (21152100021), we get a palindrome (141153351141).

The spelling of 120001251120 in words is "one hundred twenty billion, one million, two hundred fifty-one thousand, one hundred twenty".