133221142144 has 16 divisors (see below), whose sum is σ = 265401494370. Its totient is φ = 66610571008.

The previous prime is 133221142139. The next prime is 133221142213. The reversal of 133221142144 is 441241122331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 126104532544 + 7116609600 = 355112^2 + 84360^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520394959 + ... + 520395214.

Almost surely, 2^133221142144 is an apocalyptic number.

It is an amenable number.

133221142144 is a deficient number, since it is larger than the sum of its proper divisors (132180352226).

133221142144 is an equidigital number, since it uses as much as digits as its factorization.

133221142144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040790187 (or 1040790175 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 133221142144 its reverse (441241122331), we get a palindrome (574462264475).

The spelling of 133221142144 in words is "one hundred thirty-three billion, two hundred twenty-one million, one hundred forty-two thousand, one hundred forty-four".