122220112012111 has 4 divisors (see below), whose sum is σ = 122359473600232. Its totient is φ = 122080750423992.

The previous prime is 122220112012079. The next prime is 122220112012129. The reversal of 122220112012111 is 111210211022221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 122220112012111 - 2⁵ = 122220112012079 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 (122220112010111) 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, 69680792745 + ... + 69680794498.

It is an arithmetic number, because the mean of its divisors is an integer number (30589868400058).

Almost surely, 2^{122220112012111} is an apocalyptic number.

122220112012111 is a deficient number, since it is larger than the sum of its proper divisors (139361588121).

122220112012111 is an equidigital number, since it uses as much as digits as its factorization.

122220112012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139361588120.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122220112012111 its reverse (111210211022221), we get a palindrome (233430323034332).

The spelling of 122220112012111 in words is "one hundred twenty-two trillion, two hundred twenty billion, one hundred twelve million, twelve thousand, one hundred eleven".