1200120101112 has 32 divisors (see below), whose sum is σ = 3158210793600. Its totient is φ = 378985294944.

The previous prime is 1200120101111. The next prime is 1200120101161. The reversal of 1200120101112 is 2111010210021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120101111) 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, 1315920708 + ... + 1315921619.

It is an arithmetic number, because the mean of its divisors is an integer number (98694087300).

Almost surely, 2^{1200120101112} is an apocalyptic number.

1200120101112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200120101112 is an abundant number, since it is smaller than the sum of its proper divisors (1958090692488).

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

1200120101112 is a wasteful number, since it uses less digits than its factorization.

1200120101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631842355 (or 2631842351 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1200120101112 its reverse (2111010210021), we get a palindrome (3311130311133).

The spelling of 1200120101112 in words is "one trillion, two hundred billion, one hundred twenty million, one hundred one thousand, one hundred twelve".