121147715 has 8 divisors (see below), whose sum is σ = 156560208. Its totient is φ = 89462880.

The previous prime is 121147699. The next prime is 121147759. The reversal of 121147715 is 517741121.

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

It is not a de Polignac number, because 121147715 - 2⁴ = 121147699 is a prime.

It is a Duffinian 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, 931841 + ... + 931970.

It is an arithmetic number, because the mean of its divisors is an integer number (19570026).

Almost surely, 2^121147715 is an apocalyptic number.

121147715 is a deficient number, since it is larger than the sum of its proper divisors (35412493).

121147715 is a wasteful number, since it uses less digits than its factorization.

121147715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863829.

The product of its digits is 1960, while the sum is 29.

The square root of 121147715 is about 11006.7122702467. The cubic root of 121147715 is about 494.8099328102.

Adding to 121147715 its reverse (517741121), we get a palindrome (638888836).

The spelling of 121147715 in words is "one hundred twenty-one million, one hundred forty-seven thousand, seven hundred fifteen".