121252615 has 16 divisors (see below), whose sum is σ = 159989760. Its totient is φ = 87484320.

The previous prime is 121252583. The next prime is 121252633. The reversal of 121252615 is 516252121.

It is not a de Polignac number, because 121252615 - 2⁵ = 121252583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121252615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1695 + ... + 15664.

It is an arithmetic number, because the mean of its divisors is an integer number (9999360).

Almost surely, 2^121252615 is an apocalyptic number.

121252615 is a deficient number, since it is larger than the sum of its proper divisors (38737145).

121252615 is a wasteful number, since it uses less digits than its factorization.

121252615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17502.

The product of its digits is 1200, while the sum is 25.

The square root of 121252615 is about 11011.4765131657. The cubic root of 121252615 is about 494.9527077901.

The spelling of 121252615 in words is "one hundred twenty-one million, two hundred fifty-two thousand, six hundred fifteen".