121101215 has 8 divisors (see below), whose sum is σ = 145562208. Its totient is φ = 96720480.

The previous prime is 121101203. The next prime is 121101229. The reversal of 121101215 is 512101121.

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

It is not a de Polignac number, because 121101215 - 2⁶ = 121101151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121101215.

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, 16691 + ... + 22820.

It is an arithmetic number, because the mean of its divisors is an integer number (18195276).

Almost surely, 2^121101215 is an apocalyptic number.

121101215 is a deficient number, since it is larger than the sum of its proper divisors (24460993).

121101215 is an equidigital number, since it uses as much as digits as its factorization.

121101215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40129.

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 121101215 is about 11004.5997201170. The cubic root of 121101215 is about 494.7466172501.

Adding to 121101215 its reverse (512101121), we get a palindrome (633202336).

The spelling of 121101215 in words is "one hundred twenty-one million, one hundred one thousand, two hundred fifteen".