111220209973 has 8 divisors (see below), whose sum is σ = 113822643968. Its totient is φ = 108618499584.

The previous prime is 111220209949. The next prime is 111220209983. The reversal of 111220209973 is 379902022111.

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 111220209973 - 2⁹ = 111220209461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220209983) 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, 136540 + ... + 491002.

It is an arithmetic number, because the mean of its divisors is an integer number (14227830496).

Almost surely, 2^111220209973 is an apocalyptic number.

It is an amenable number.

111220209973 is a deficient number, since it is larger than the sum of its proper divisors (2602433995).

111220209973 is an equidigital number, since it uses as much as digits as its factorization.

111220209973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361803.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 111220209973 in words is "one hundred eleven billion, two hundred twenty million, two hundred nine thousand, nine hundred seventy-three".