122112001209 has 32 divisors (see below), whose sum is σ = 182612284416. Its totient is φ = 71930358720.

The previous prime is 122112001177. The next prime is 122112001241. The reversal of 122112001209 is 902100211221.

It is an interprime number because it is at equal distance from previous prime (122112001177) and next prime (122112001241).

It is not a de Polignac number, because 122112001209 - 2⁵ = 122112001177 is a prime.

It is a super-2 number, since 2×122112001209² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122112001259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1103484 + ... + 1209090.

It is an arithmetic number, because the mean of its divisors is an integer number (5706633888).

Almost surely, 2^122112001209 is an apocalyptic number.

It is an amenable number.

122112001209 is a deficient number, since it is larger than the sum of its proper divisors (60500283207).

122112001209 is a wasteful number, since it uses less digits than its factorization.

122112001209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106605.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 122112001209 in words is "one hundred twenty-two billion, one hundred twelve million, one thousand, two hundred nine".