121222450 has 24 divisors (see below), whose sum is σ = 228015540. Its totient is φ = 47942400.

The previous prime is 121222421. The next prime is 121222457. The reversal of 121222450 is 54222121.

It can be written as a sum of positive squares in 6 ways, for example, as 67947049 + 53275401 = 8243^2 + 7299^2 .

It is not an unprimeable number, because it can be changed into a prime (121222457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9171 + ... + 18070.

Almost surely, 2^121222450 is an apocalyptic number.

121222450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222450 is a deficient number, since it is larger than the sum of its proper divisors (106793090).

121222450 is a wasteful number, since it uses less digits than its factorization.

121222450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27342 (or 27337 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 121222450 is about 11010.1067206454. The cubic root of 121222450 is about 494.9116599147.

Adding to 121222450 its reverse (54222121), we get a palindrome (175444571).

The spelling of 121222450 in words is "one hundred twenty-one million, two hundred twenty-two thousand, four hundred fifty".