121365250 has 32 divisors (see below), whose sum is σ = 237085056. Its totient is φ = 46433200.

The previous prime is 121365247. The next prime is 121365253. The reversal of 121365250 is 52563121.

It is an interprime number because it is at equal distance from previous prime (121365247) and next prime (121365253).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (121365253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4804 + ... + 16303.

It is an arithmetic number, because the mean of its divisors is an integer number (7408908).

Almost surely, 2^121365250 is an apocalyptic number.

121365250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121365250 is a deficient number, since it is larger than the sum of its proper divisors (115719806).

121365250 is a wasteful number, since it uses less digits than its factorization.

121365250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21147 (or 21137 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 121365250 is about 11016.5897627170. The cubic root of 121365250 is about 495.1059189047.

The spelling of 121365250 in words is "one hundred twenty-one million, three hundred sixty-five thousand, two hundred fifty".