121200133443 has 16 divisors (see below), whose sum is σ = 164045984256. Its totient is φ = 79579543680.

The previous prime is 121200133433. The next prime is 121200133519. The reversal of 121200133443 is 344331002121.

It is a happy number.

It is not a de Polignac number, because 121200133443 - 2⁴ = 121200133427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121200133403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88246 + ... + 500187.

It is an arithmetic number, because the mean of its divisors is an integer number (10252874016).

Almost surely, 2^121200133443 is an apocalyptic number.

121200133443 is a deficient number, since it is larger than the sum of its proper divisors (42845850813).

121200133443 is an equidigital number, since it uses as much as digits as its factorization.

121200133443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589474.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 121200133443 its reverse (344331002121), we get a palindrome (465531135564).

The spelling of 121200133443 in words is "one hundred twenty-one billion, two hundred million, one hundred thirty-three thousand, four hundred forty-three".