1100021220992 has 64 divisors (see below), whose sum is σ = 2196998634600. Its totient is φ = 548618932224.

The previous prime is 1100021220979. The next prime is 1100021220997. The reversal of 1100021220992 is 2990221200011.

It can be written as a sum of positive squares in 4 ways, for example, as 1046889126976 + 53132094016 = 1023176^2 + 230504^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (1100021220997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151995998 + ... + 152003234.

Almost surely, 2^{1100021220992} is an apocalyptic number.

It is an amenable number.

1100021220992 is a deficient number, since it is larger than the sum of its proper divisors (1096977413608).

1100021220992 is an equidigital number, since it uses as much as digits as its factorization.

1100021220992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093 (or 10081 counting only the distinct ones).

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

The spelling of 1100021220992 in words is "one trillion, one hundred billion, twenty-one million, two hundred twenty thousand, nine hundred ninety-two".