1200022101012 has 96 divisors (see below), whose sum is σ = 3450641402880. Its totient is φ = 316895604480.

The previous prime is 1200022100987. The next prime is 1200022101073. The reversal of 1200022101012 is 2101012200021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9103998 + ... + 9234869.

It is an arithmetic number, because the mean of its divisors is an integer number (35944181280).

Almost surely, 2^{1200022101012} is an apocalyptic number.

1200022101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200022101012 is an abundant number, since it is smaller than the sum of its proper divisors (2250619301868).

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

1200022101012 is a wasteful number, since it uses less digits than its factorization.

1200022101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18338941 (or 18338939 counting only the distinct ones).

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

Adding to 1200022101012 its reverse (2101012200021), we get a palindrome (3301034301033).

Subtracting 1200022101012 from its reverse (2101012200021), we obtain a palindrome (900990099009).

The spelling of 1200022101012 in words is "one trillion, two hundred billion, twenty-two million, one hundred one thousand, twelve".