121100220200 has 48 divisors (see below), whose sum is σ = 296376864000. Its totient is φ = 45890608320.

The previous prime is 121100220161. The next prime is 121100220209. The reversal of 121100220200 is 2022001121.

It is a happy number.

It is a super-4 number, since 4×121100220200⁴ (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (121100220209) 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, 15930440 + ... + 15938039.

It is an arithmetic number, because the mean of its divisors is an integer number (6174518000).

Almost surely, 2^121100220200 is an apocalyptic number.

121100220200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100220200 is an abundant number, since it is smaller than the sum of its proper divisors (175276643800).

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

121100220200 is a wasteful number, since it uses less digits than its factorization.

121100220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31868514 (or 31868505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121100220200 its reverse (2022001121), we get a palindrome (123122221321).

The spelling of 121100220200 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty thousand, two hundred".