20113100999 has 8 divisors (see below), whose sum is σ = 20637633408. Its totient is φ = 19590186240.

The previous prime is 20113100977. The next prime is 20113101037. The reversal of 20113100999 is 99900131102.

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 20113100999 - 2¹² = 20113096903 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 (20113100929) 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, 379202 + ... + 428975.

It is an arithmetic number, because the mean of its divisors is an integer number (2579704176).

Almost surely, 2^20113100999 is an apocalyptic number.

20113100999 is a deficient number, since it is larger than the sum of its proper divisors (524532409).

20113100999 is an equidigital number, since it uses as much as digits as its factorization.

20113100999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808825.

The product of its (nonzero) digits is 4374, while the sum is 35.

The spelling of 20113100999 in words is "twenty billion, one hundred thirteen million, one hundred thousand, nine hundred ninety-nine".