123122215 has 16 divisors (see below), whose sum is σ = 150463872. Its totient is φ = 96696864.

The previous prime is 123122189. The next prime is 123122231. The reversal of 123122215 is 512221321.

It is a cyclic number.

It is not a de Polignac number, because 123122215 - 2¹³ = 123114023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123122192 and 123122201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156052 + ... + 156838.

It is an arithmetic number, because the mean of its divisors is an integer number (9403992).

Almost surely, 2^123122215 is an apocalyptic number.

123122215 is a deficient number, since it is larger than the sum of its proper divisors (27341657).

123122215 is an equidigital number, since it uses as much as digits as its factorization.

123122215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its digits is 240, while the sum is 19.

The square root of 123122215 is about 11096.0450161307. The cubic root of 123122215 is about 497.4836438147.

Adding to 123122215 its reverse (512221321), we get a palindrome (635343536).

The spelling of 123122215 in words is "one hundred twenty-three million, one hundred twenty-two thousand, two hundred fifteen".