121020133443 has 48 divisors (see below), whose sum is σ = 188845966080. Its totient is φ = 68347072000.

The previous prime is 121020133427. The next prime is 121020133447. The reversal of 121020133443 is 344331020121.

It is a happy number.

It is not a de Polignac number, because 121020133443 - 2⁴ = 121020133427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121020133447) 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 47 ways as a sum of consecutive naturals, for example, 900418 + ... + 1026056.

It is an arithmetic number, because the mean of its divisors is an integer number (3934290960).

Almost surely, 2^121020133443 is an apocalyptic number.

121020133443 is a deficient number, since it is larger than the sum of its proper divisors (67825832637).

121020133443 is a wasteful number, since it uses less digits than its factorization.

121020133443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125788 (or 125771 counting only the distinct ones).

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

Adding to 121020133443 its reverse (344331020121), we get a palindrome (465351153564).

The spelling of 121020133443 in words is "one hundred twenty-one billion, twenty million, one hundred thirty-three thousand, four hundred forty-three".