121149215 has 8 divisors (see below), whose sum is σ = 158595408. Its totient is φ = 88108480.

The previous prime is 121149181. The next prime is 121149227. The reversal of 121149215 is 512941121.

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

It is not a de Polignac number, because 121149215 - 2¹⁰ = 121148191 is a prime.

It is a Duffinian number.

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, 1101302 + ... + 1101411.

It is an arithmetic number, because the mean of its divisors is an integer number (19824426).

Almost surely, 2^121149215 is an apocalyptic number.

121149215 is a deficient number, since it is larger than the sum of its proper divisors (37446193).

121149215 is a wasteful number, since it uses less digits than its factorization.

121149215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202729.

The product of its digits is 720, while the sum is 26.

The square root of 121149215 is about 11006.7804102744. The cubic root of 121149215 is about 494.8119749778.

The spelling of 121149215 in words is "one hundred twenty-one million, one hundred forty-nine thousand, two hundred fifteen".