20021001111199 has 8 divisors (see below), whose sum is σ = 21842158878720. Its totient is φ = 18200021136600.

The previous prime is 20021001111187. The next prime is 20021001111211. The reversal of 20021001111199 is 99111110012002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20021001111187) and next prime (20021001111211).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021001111199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021001111179) 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, 44212717 + ... + 44663254.

It is an arithmetic number, because the mean of its divisors is an integer number (2730269859840).

Almost surely, 2^{20021001111199} is an apocalyptic number.

20021001111199 is a deficient number, since it is larger than the sum of its proper divisors (1821157767521).

20021001111199 is a wasteful number, since it uses less digits than its factorization.

20021001111199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88896461.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 20021001111199 in words is "twenty trillion, twenty-one billion, one million, one hundred eleven thousand, one hundred ninety-nine".