1021200221132 has 96 divisors (see below), whose sum is σ = 2236523103360. Its totient is φ = 397242869760.

The previous prime is 1021200221089. The next prime is 1021200221177. The reversal of 1021200221132 is 2311220021201.

1021200221132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1021200221132² (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 1021200221132.

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, 5776598 + ... + 5950754.

It is an arithmetic number, because the mean of its divisors is an integer number (23297115660).

Almost surely, 2^{1021200221132} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021200221132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118261551680).

1021200221132 is an abundant number, since it is smaller than the sum of its proper divisors (1215322882228).

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

1021200221132 is a wasteful number, since it uses less digits than its factorization.

1021200221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174451 (or 174449 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1021200221132 its reverse (2311220021201), we get a palindrome (3332420242333).

The spelling of 1021200221132 in words is "one trillion, twenty-one billion, two hundred million, two hundred twenty-one thousand, one hundred thirty-two".