121210250 has 32 divisors (see below), whose sum is σ = 259324416. Its totient is φ = 41557200.

The previous prime is 121210237. The next prime is 121210333. The reversal of 121210250 is 52012121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32882 + ... + 36381.

It is an arithmetic number, because the mean of its divisors is an integer number (8103888).

Almost surely, 2^121210250 is an apocalyptic number.

121210250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210250 is an abundant number, since it is smaller than the sum of its proper divisors (138114166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121210250 is an equidigital number, since it uses as much as digits as its factorization.

121210250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69287 (or 69277 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 121210250 is about 11009.5526702950. The cubic root of 121210250 is about 494.8950564863.

Adding to 121210250 its reverse (52012121), we get a palindrome (173222371).

The spelling of 121210250 in words is "one hundred twenty-one million, two hundred ten thousand, two hundred fifty".