1101201121209 has 16 divisors (see below), whose sum is σ = 1687395179520. Its totient is φ = 625742374800.

The previous prime is 1101201121159. The next prime is 1101201121219. The reversal of 1101201121209 is 9021211021011.

It is a de Polignac number, because none of the positive numbers 2^k-1101201121209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1101201121219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146471517 + ... + 146479034.

It is an arithmetic number, because the mean of its divisors is an integer number (105462198720).

Almost surely, 2^{1101201121209} is an apocalyptic number.

It is an amenable number.

1101201121209 is a deficient number, since it is larger than the sum of its proper divisors (586194058311).

1101201121209 is a wasteful number, since it uses less digits than its factorization.

1101201121209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292950740.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 1101201121209 in words is "one trillion, one hundred one billion, two hundred one million, one hundred twenty-one thousand, two hundred nine".