111222121012099 has 8 divisors (see below), whose sum is σ = 116523512434688. Its totient is φ = 106027828406280.

The previous prime is 111222121012061. The next prime is 111222121012157. The reversal of 111222121012099 is 990210121222111.

It is a happy number.

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 111222121012099 - 2²⁵ = 111222087457667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222121012199) 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, 26774702067 + ... + 26774706220.

It is an arithmetic number, because the mean of its divisors is an integer number (14565439054336).

Almost surely, 2^{111222121012099} is an apocalyptic number.

111222121012099 is a deficient number, since it is larger than the sum of its proper divisors (5301391422589).

111222121012099 is an equidigital number, since it uses as much as digits as its factorization.

111222121012099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53549408385.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 111222121012099 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, ninety-nine".