1012200021192 has 16 divisors (see below), whose sum is σ = 2530500053040. Its totient is φ = 337400007056.

The previous prime is 1012200021187. The next prime is 1012200021193. The reversal of 1012200021192 is 2911200022101.

It is not an unprimeable number, because it can be changed into a prime (1012200021193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21087500418 + ... + 21087500465.

It is an arithmetic number, because the mean of its divisors is an integer number (158156253315).

Almost surely, 2^{1012200021192} is an apocalyptic number.

1012200021192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1012200021192 is an abundant number, since it is smaller than the sum of its proper divisors (1518300031848).

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

1012200021192 is a wasteful number, since it uses less digits than its factorization.

1012200021192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42175000892 (or 42175000888 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 1012200021192 its reverse (2911200022101), we get a palindrome (3923400043293).

The spelling of 1012200021192 in words is "one trillion, twelve billion, two hundred million, twenty-one thousand, one hundred ninety-two".