20102111099 has 8 divisors (see below), whose sum is σ = 23027148288. Its totient is φ = 17190400680.

The previous prime is 20102111069. The next prime is 20102111111. The reversal of 20102111099 is 99011120102.

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 20102111099 - 2²⁴ = 20085333883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102111039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3328457 + ... + 3334490.

It is an arithmetic number, because the mean of its divisors is an integer number (2878393536).

Almost surely, 2^20102111099 is an apocalyptic number.

20102111099 is a deficient number, since it is larger than the sum of its proper divisors (2925037189).

20102111099 is an equidigital number, since it uses as much as digits as its factorization.

20102111099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6663385.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 20102111099 in words is "twenty billion, one hundred two million, one hundred eleven thousand, ninety-nine".