20102211099 has 8 divisors (see below), whose sum is σ = 29781053520. Its totient is φ = 13401474048.

The previous prime is 20102211089. The next prime is 20102211127. The reversal of 20102211099 is 99011220102.

It is not a de Polignac number, because 20102211099 - 2⁹ = 20102210587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 744526337 = 20102211099 / (2 + 0 + 1 + 0 + 2 + 2 + 1 + 1 + 0 + 9 + 9).

It is not an unprimeable number, because it can be changed into a prime (20102211079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372263142 + ... + 372263195.

It is an arithmetic number, because the mean of its divisors is an integer number (3722631690).

Almost surely, 2^20102211099 is an apocalyptic number.

20102211099 is a deficient number, since it is larger than the sum of its proper divisors (9678842421).

20102211099 is an equidigital number, since it uses as much as digits as its factorization.

20102211099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744526346 (or 744526340 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 20102211099 in words is "twenty billion, one hundred two million, two hundred eleven thousand, ninety-nine".