11122021993 has 8 divisors (see below), whose sum is σ = 11791089920. Its totient is φ = 10472347440.

The previous prime is 11122021957. The next prime is 11122021997. The reversal of 11122021993 is 39912022111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11122021993 - 2²⁹ = 10585151081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122021997) 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, 4847163 + ... + 4849456.

It is an arithmetic number, because the mean of its divisors is an integer number (1473886240).

Almost surely, 2^11122021993 is an apocalyptic number.

It is an amenable number.

11122021993 is a deficient number, since it is larger than the sum of its proper divisors (669067927).

11122021993 is an equidigital number, since it uses as much as digits as its factorization.

11122021993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9696687.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 11122021993 in words is "eleven billion, one hundred twenty-two million, twenty-one thousand, nine hundred ninety-three".