1100021011993 has 4 divisors (see below), whose sum is σ = 1102376517840. Its totient is φ = 1097665506148.

The previous prime is 1100021011979. The next prime is 1100021011997. The reversal of 1100021011993 is 3991101200011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100021011993 - 2²⁵ = 1099987457561 is a prime.

It is a super-2 number, since 2×1100021011993² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100021011997) 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, 1177752223 + ... + 1177753156.

It is an arithmetic number, because the mean of its divisors is an integer number (275594129460).

Almost surely, 2^{1100021011993} is an apocalyptic number.

It is an amenable number.

1100021011993 is a deficient number, since it is larger than the sum of its proper divisors (2355505847).

1100021011993 is an equidigital number, since it uses as much as digits as its factorization.

1100021011993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355505846.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 1100021011993 in words is "one trillion, one hundred billion, twenty-one million, eleven thousand, nine hundred ninety-three".