1200112210020 has 48 divisors (see below), whose sum is σ = 3506414808960. Its totient is φ = 306115577856.

The previous prime is 1200112210001. The next prime is 1200112210021. The reversal of 1200112210020 is 200122110021.

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

It is a junction number, because it is equal to n+sod(n) for n = 1200112209978 and 1200112210005.

It is not an unprimeable number, because it can be changed into a prime (1200112210021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434821885 + ... + 434824644.

It is an arithmetic number, because the mean of its divisors is an integer number (73050308520).

Almost surely, 2^{1200112210020} is an apocalyptic number.

1200112210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200112210020 is an abundant number, since it is smaller than the sum of its proper divisors (2306302598940).

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

1200112210020 is a wasteful number, since it uses less digits than its factorization.

1200112210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869646564 (or 869646562 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200112210020 its reverse (200122110021), we get a palindrome (1400234320041).

Subtracting from 1200112210020 its reverse (200122110021), we obtain a palindrome (999990099999).

The spelling of 1200112210020 in words is "one trillion, two hundred billion, one hundred twelve million, two hundred ten thousand, twenty".