121122120200 has 48 divisors (see below), whose sum is σ = 298174168980. Its totient is φ = 45598914560.

The previous prime is 121122120143. The next prime is 121122120277. The reversal of 121122120200 is 2021221121.

It can be written as a sum of positive squares in 6 ways, for example, as 48772955716 + 72349164484 = 220846^2 + 268978^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17808677 + ... + 17815476.

Almost surely, 2^121122120200 is an apocalyptic number.

121122120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122120200 is an abundant number, since it is smaller than the sum of its proper divisors (177052048780).

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

121122120200 is a wasteful number, since it uses less digits than its factorization.

121122120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35624186 (or 35624177 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121122120200 its reverse (2021221121), we get a palindrome (123143341321).

It can be divided in two parts, 12112 and 2120200, that added together give a palindrome (2132312).

The spelling of 121122120200 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred".