121302152 has 16 divisors (see below), whose sum is σ = 227787660. Its totient is φ = 60558784.

The previous prime is 121302127. The next prime is 121302179. The reversal of 121302152 is 251203121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76492516 + 44809636 = 8746^2 + 6694^2 .

It is a super-2 number, since 2×121302152² = 29428424159662208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121302152.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5783 + ... + 16614.

Almost surely, 2^121302152 is an apocalyptic number.

It is an amenable number.

121302152 is a deficient number, since it is larger than the sum of its proper divisors (106485508).

121302152 is a wasteful number, since it uses less digits than its factorization.

121302152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23080 (or 23076 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121302152 is about 11013.7256185180. The cubic root of 121302152 is about 495.0201018943.

Adding to 121302152 its reverse (251203121), we get a palindrome (372505273).

The spelling of 121302152 in words is "one hundred twenty-one million, three hundred two thousand, one hundred fifty-two".