122219515109 has 16 divisors (see below), whose sum is σ = 125341635120. Its totient is φ = 119140761600.

The previous prime is 122219515087. The next prime is 122219515193. The reversal of 122219515109 is 901515912221.

It can be written as a sum of positive squares in 8 ways, for example, as 40378893025 + 81840622084 = 200945^2 + 286078^2 .

It is a cyclic number.

It is not a de Polignac number, because 122219515109 - 2³² = 117924547813 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 (122219565109) 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, 4239857 + ... + 4268585.

It is an arithmetic number, because the mean of its divisors is an integer number (7833852195).

Almost surely, 2^122219515109 is an apocalyptic number.

It is an amenable number.

122219515109 is a deficient number, since it is larger than the sum of its proper divisors (3122120011).

122219515109 is a wasteful number, since it uses less digits than its factorization.

122219515109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29480.

The product of its (nonzero) digits is 16200, while the sum is 38.

The spelling of 122219515109 in words is "one hundred twenty-two billion, two hundred nineteen million, five hundred fifteen thousand, one hundred nine".