12020021993 has 8 divisors (see below), whose sum is σ = 14210863680. Its totient is φ = 9947604240.

The previous prime is 12020021963. The next prime is 12020022031. The reversal of 12020021993 is 39912002021.

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

It is not a de Polignac number, because 12020021993 - 2¹² = 12020017897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020021953) 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, 29605763 + ... + 29606168.

It is an arithmetic number, because the mean of its divisors is an integer number (1776357960).

Almost surely, 2^12020021993 is an apocalyptic number.

It is an amenable number.

12020021993 is a deficient number, since it is larger than the sum of its proper divisors (2190841687).

12020021993 is an equidigital number, since it uses as much as digits as its factorization.

12020021993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59211967.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 12020021993 in words is "twelve billion, twenty million, twenty-one thousand, nine hundred ninety-three".