122112212109 has 16 divisors (see below), whose sum is σ = 167365005120. Its totient is φ = 79137682560.

The previous prime is 122112212063. The next prime is 122112212153. The reversal of 122112212109 is 901212211221.

It is not a de Polignac number, because 122112212109 - 2²⁵ = 122078657677 is a prime.

It is a super-2 number, since 2×122112212109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112210109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361887 + ... + 612524.

It is an arithmetic number, because the mean of its divisors is an integer number (10460312820).

Almost surely, 2^122112212109 is an apocalyptic number.

It is an amenable number.

122112212109 is a deficient number, since it is larger than the sum of its proper divisors (45252793011).

122112212109 is a wasteful number, since it uses less digits than its factorization.

122112212109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975580.

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

The spelling of 122112212109 in words is "one hundred twenty-two billion, one hundred twelve million, two hundred twelve thousand, one hundred nine".