111002121209 has 8 divisors (see below), whose sum is σ = 132375200640. Its totient is φ = 91007950176.

The previous prime is 111002121193. The next prime is 111002121211. The reversal of 111002121209 is 902121200111.

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 111002121209 - 2⁴ = 111002121193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111002121239) 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, 344726924 + ... + 344727245.

It is an arithmetic number, because the mean of its divisors is an integer number (16546900080).

Almost surely, 2^111002121209 is an apocalyptic number.

It is an amenable number.

111002121209 is a deficient number, since it is larger than the sum of its proper divisors (21373079431).

111002121209 is an equidigital number, since it uses as much as digits as its factorization.

111002121209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689454199.

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

The spelling of 111002121209 in words is "one hundred eleven billion, two million, one hundred twenty-one thousand, two hundred nine".