1020221100992 has 42 divisors (see below), whose sum is σ = 2068492507152. Its totient is φ = 499257065344.

The previous prime is 1020221100991. The next prime is 1020221101001. The reversal of 1020221100992 is 2990011220201.

1020221100992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221100991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3466808 + ... + 3749559.

Almost surely, 2^{1020221100992} is an apocalyptic number.

It is an amenable number.

1020221100992 is an abundant number, since it is smaller than the sum of its proper divisors (1048271406160).

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

1020221100992 is an frugal number, since it uses more digits than its factorization.

1020221100992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7216473 (or 7216416 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1020221100992 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred thousand, nine hundred ninety-two".