121042331443 has 4 divisors (see below), whose sum is σ = 132046179768. Its totient is φ = 110038483120.

The previous prime is 121042331441. The next prime is 121042331461. The reversal of 121042331443 is 344133240121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344133240121 = 11 ⋅31284840011.

It is a cyclic number.

It is not a de Polignac number, because 121042331443 - 2¹ = 121042331441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121042331441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5501924146 + ... + 5501924167.

It is an arithmetic number, because the mean of its divisors is an integer number (33011544942).

Almost surely, 2^121042331443 is an apocalyptic number.

121042331443 is a deficient number, since it is larger than the sum of its proper divisors (11003848325).

121042331443 is a wasteful number, since it uses less digits than its factorization.

121042331443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11003848324.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 121042331443 its reverse (344133240121), we get a palindrome (465175571564).

The spelling of 121042331443 in words is "one hundred twenty-one billion, forty-two million, three hundred thirty-one thousand, four hundred forty-three".