133431221442 has 16 divisors (see below), whose sum is σ = 278465158080. Its totient is φ = 42543287952.

The previous prime is 133431221411. The next prime is 133431221459. The reversal of 133431221442 is 244122134331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483446317 + ... + 483446592.

It is an arithmetic number, because the mean of its divisors is an integer number (17404072380).

Almost surely, 2^133431221442 is an apocalyptic number.

133431221442 is an abundant number, since it is smaller than the sum of its proper divisors (145033936638).

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

133431221442 is a wasteful number, since it uses less digits than its factorization.

133431221442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966892937.

The product of its digits is 13824, while the sum is 30.

Adding to 133431221442 its reverse (244122134331), we get a palindrome (377553355773).

The spelling of 133431221442 in words is "one hundred thirty-three billion, four hundred thirty-one million, two hundred twenty-one thousand, four hundred forty-two".