122111220219 has 4 divisors (see below), whose sum is σ = 162814960296. Its totient is φ = 81407480144.

The previous prime is 122111220173. The next prime is 122111220221. The reversal of 122111220219 is 912022111221.

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 122111220219 - 2²¹ = 122109123067 is a prime.

It is a super-2 number, since 2×122111220219² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122111220419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20351870034 + ... + 20351870039.

It is an arithmetic number, because the mean of its divisors is an integer number (40703740074).

Almost surely, 2^122111220219 is an apocalyptic number.

122111220219 is a deficient number, since it is larger than the sum of its proper divisors (40703740077).

122111220219 is an equidigital number, since it uses as much as digits as its factorization.

122111220219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40703740076.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 122111220219 in words is "one hundred twenty-two billion, one hundred eleven million, two hundred twenty thousand, two hundred nineteen".