122121215 has 8 divisors (see below), whose sum is σ = 146610000. Its totient is φ = 97653952.

The previous prime is 122121203. The next prime is 122121239. The reversal of 122121215 is 512121221.

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 122121215 - 2⁴ = 122121199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122121193 and 122121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12536 + ... + 20034.

It is an arithmetic number, because the mean of its divisors is an integer number (18326250).

Almost surely, 2^122121215 is an apocalyptic number.

122121215 is a deficient number, since it is larger than the sum of its proper divisors (24488785).

122121215 is an equidigital number, since it uses as much as digits as its factorization.

122121215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10761.

The product of its digits is 80, while the sum is 17.

The square root of 122121215 is about 11050.8468001326. The cubic root of 122121215 is about 496.1317707802.

Adding to 122121215 its reverse (512121221), we get a palindrome (634242436).

The spelling of 122121215 in words is "one hundred twenty-two million, one hundred twenty-one thousand, two hundred fifteen".