120011100012 has 24 divisors (see below), whose sum is σ = 311139889200. Its totient is φ = 40003699968.

The previous prime is 120011099927. The next prime is 120011100023. The reversal of 120011100012 is 210001110021.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 120011099967 and 120011100003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555606837 + ... + 555607052.

It is an arithmetic number, because the mean of its divisors is an integer number (12964162050).

Almost surely, 2^120011100012 is an apocalyptic number.

120011100012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120011100012 is an abundant number, since it is smaller than the sum of its proper divisors (191128789188).

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

120011100012 is a wasteful number, since it uses less digits than its factorization.

120011100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111213902 (or 1111213894 counting only the distinct ones).

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

Adding to 120011100012 its reverse (210001110021), we get a palindrome (330012210033).

The spelling of 120011100012 in words is "one hundred twenty billion, eleven million, one hundred thousand, twelve".