1102100211209 has 4 divisors (see below), whose sum is σ = 1102265673540. Its totient is φ = 1101934748880.

The previous prime is 1102100211203. The next prime is 1102100211241. The reversal of 1102100211209 is 9021120012011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1030153951225 + 71946259984 = 1014965^2 + 268228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102100211209 - 2¹² = 1102100207113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102100211203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82721174 + ... + 82734495.

It is an arithmetic number, because the mean of its divisors is an integer number (275566418385).

Almost surely, 2^{1102100211209} is an apocalyptic number.

It is an amenable number.

1102100211209 is a deficient number, since it is larger than the sum of its proper divisors (165462331).

1102100211209 is an equidigital number, since it uses as much as digits as its factorization.

1102100211209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165462330.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1102100211209 in words is "one trillion, one hundred two billion, one hundred million, two hundred eleven thousand, two hundred nine".