121322321200 has 120 divisors (see below), whose sum is σ = 297225583488. Its totient is φ = 47573360640.

The previous prime is 121322321191. The next prime is 121322321207. The reversal of 121322321200 is 2123223121.

It is not an unprimeable number, because it can be changed into a prime (121322321207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46787104 + ... + 46789696.

Almost surely, 2^121322321200 is an apocalyptic number.

121322321200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121322321200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148612791744).

121322321200 is an abundant number, since it is smaller than the sum of its proper divisors (175903262288).

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

121322321200 is a wasteful number, since it uses less digits than its factorization.

121322321200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871 (or 4860 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121322321200 its reverse (2123223121), we get a palindrome (123445544321).

It can be divided in two parts, 12132 and 2321200, that added together give a palindrome (2333332).

The spelling of 121322321200 in words is "one hundred twenty-one billion, three hundred twenty-two million, three hundred twenty-one thousand, two hundred".