1200021311132 has 48 divisors (see below), whose sum is σ = 2407500285120. Its totient is φ = 512698678272.

The previous prime is 1200021311129. The next prime is 1200021311231. The reversal of 1200021311132 is 2311131200021.

It is a super-2 number, since 2×1200021311132² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1200021311132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15443594 + ... + 15521102.

It is an arithmetic number, because the mean of its divisors is an integer number (50156255940).

Almost surely, 2^{1200021311132} is an apocalyptic number.

It is an amenable number.

1200021311132 is an abundant number, since it is smaller than the sum of its proper divisors (1207478973988).

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

1200021311132 is a wasteful number, since it uses less digits than its factorization.

1200021311132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79230 (or 79228 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1200021311132 its reverse (2311131200021), we get a palindrome (3511152511153).

The spelling of 1200021311132 in words is "one trillion, two hundred billion, twenty-one million, three hundred eleven thousand, one hundred thirty-two".