120111011001 has 8 divisors (see below), whose sum is σ = 177942238560. Its totient is φ = 80074007316.

The previous prime is 120111010951. The next prime is 120111011003. The reversal of 120111011001 is 100110111021.

It is not a de Polignac number, because 120111011001 - 2²¹ = 120108913849 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 (120111011003) 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, 2224277955 + ... + 2224278008.

It is an arithmetic number, because the mean of its divisors is an integer number (22242779820).

Almost surely, 2^120111011001 is an apocalyptic number.

It is an amenable number.

120111011001 is a deficient number, since it is larger than the sum of its proper divisors (57831227559).

120111011001 is an equidigital number, since it uses as much as digits as its factorization.

120111011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448555972 (or 4448555966 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 120111011001 its reverse (100110111021), we get a palindrome (220221122022).

The spelling of 120111011001 in words is "one hundred twenty billion, one hundred eleven million, eleven thousand, one".