15122204214209 has 8 divisors (see below), whose sum is σ = 15124583896968. Its totient is φ = 15119824711680.

The previous prime is 15122204214203. The next prime is 15122204214233. The reversal of 15122204214209 is 90241240222151.

It can be written as a sum of positive squares in 4 ways, for example, as 3417218439184 + 11704985775025 = 1848572^2 + 3421255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15122204214209 - 2⁴ = 15122204214193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15122204214203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356155709 + ... + 356198165.

It is an arithmetic number, because the mean of its divisors is an integer number (1890572987121).

Almost surely, 2^{15122204214209} is an apocalyptic number.

It is an amenable number.

15122204214209 is a deficient number, since it is larger than the sum of its proper divisors (2379682759).

15122204214209 is an equidigital number, since it uses as much as digits as its factorization.

15122204214209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90115.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 15122204214209 in words is "fifteen trillion, one hundred twenty-two billion, two hundred four million, two hundred fourteen thousand, two hundred nine".