121203650 has 12 divisors (see below), whose sum is σ = 225438882. Its totient is φ = 48481440.

The previous prime is 121203637. The next prime is 121203653. The reversal of 121203650 is 56302121.

It can be written as a sum of positive squares in 3 ways, for example, as 109390681 + 11812969 = 10459^2 + 3437^2 .

It is not an unprimeable number, because it can be changed into a prime (121203653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1211987 + ... + 1212086.

Almost surely, 2^121203650 is an apocalyptic number.

121203650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121203650 is a deficient number, since it is larger than the sum of its proper divisors (104235232).

121203650 is a wasteful number, since it uses less digits than its factorization.

121203650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424085 (or 2424080 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 121203650 is about 11009.2529265159. The cubic root of 121203650 is about 494.8860738393.

Adding to 121203650 its reverse (56302121), we get a palindrome (177505771).

The spelling of 121203650 in words is "one hundred twenty-one million, two hundred three thousand, six hundred fifty".