121002250 has 32 divisors (see below), whose sum is σ = 227195280. Its totient is φ = 48256000.

The previous prime is 121002199. The next prime is 121002251. The reversal of 121002250 is 52200121.

It can be written as a sum of positive squares in 8 ways, for example, as 7601049 + 113401201 = 2757^2 + 10649^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121002250.

It is not an unprimeable number, because it can be changed into a prime (121002251) by changing a digit.

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, 129786 + ... + 130714.

Almost surely, 2^121002250 is an apocalyptic number.

121002250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121002250 is a deficient number, since it is larger than the sum of its proper divisors (106193030).

121002250 is an equidigital number, since it uses as much as digits as its factorization.

121002250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 121002250 is about 11000.1022722518. The cubic root of 121002250 is about 494.6118100625.

Adding to 121002250 its reverse (52200121), we get a palindrome (173202371).

The spelling of 121002250 in words is "one hundred twenty-one million, two thousand, two hundred fifty".