121202220200 has 48 divisors (see below), whose sum is σ = 281822109180. Its totient is φ = 48476252160.

The previous prime is 121202220193. The next prime is 121202220247. The reversal of 121202220200 is 2022202121.

It can be written as a sum of positive squares in 6 ways, for example, as 112371107524 + 8831112676 = 335218^2 + 93974^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2716472 + ... + 2760728.

Almost surely, 2^121202220200 is an apocalyptic number.

121202220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202220200 is an abundant number, since it is smaller than the sum of its proper divisors (160619888980).

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

121202220200 is a wasteful number, since it uses less digits than its factorization.

121202220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57966 (or 57957 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 121202220200 its reverse (2022202121), we get a palindrome (123224422321).

The spelling of 121202220200 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty thousand, two hundred".