121027217200 has 60 divisors (see below), whose sum is σ = 296254127808. Its totient is φ = 47497465600.

The previous prime is 121027217191. The next prime is 121027217209. The reversal of 121027217200 is 2712720121.

It is an interprime number because it is at equal distance from previous prime (121027217191) and next prime (121027217209).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (121027217209) by changing a digit.

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, 2833216 + ... + 2875615.

Almost surely, 2^121027217200 is an apocalyptic number.

121027217200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121027217200 is an abundant number, since it is smaller than the sum of its proper divisors (175226910608).

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

121027217200 is a wasteful number, since it uses less digits than its factorization.

121027217200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708902 (or 5708891 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 121027217200 its reverse (2712720121), we get a palindrome (123739937321).

The spelling of 121027217200 in words is "one hundred twenty-one billion, twenty-seven million, two hundred seventeen thousand, two hundred".