215350121 has 8 divisors (see below), whose sum is σ = 246814464. Its totient is φ = 184060800.

The previous prime is 215350117. The next prime is 215350139. The reversal of 215350121 is 121053512.

It is a happy number.

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

It is not a de Polignac number, because 215350121 - 2² = 215350117 is a prime.

It is a super-2 number, since 2×215350121² = 92751349229429282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 215350093 and 215350102.

It is not an unprimeable number, because it can be changed into a prime (215350111) 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, 41105 + ... + 46046.

It is an arithmetic number, because the mean of its divisors is an integer number (30851808).

Almost surely, 2^215350121 is an apocalyptic number.

It is an amenable number.

215350121 is a deficient number, since it is larger than the sum of its proper divisors (31464343).

215350121 is an equidigital number, since it uses as much as digits as its factorization.

215350121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87511.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 215350121 is about 14674.8124689892. The cubic root of 215350121 is about 599.3976556898.

The spelling of 215350121 in words is "two hundred fifteen million, three hundred fifty thousand, one hundred twenty-one".