133223444442 has 60 divisors (see below), whose sum is σ = 328124457738. Its totient is φ = 40370734800.

The previous prime is 133223444429. The next prime is 133223444449. The reversal of 133223444442 is 244444322331.

It can be written as a sum of positive squares in only one way, i.e., 104865221241 + 28358223201 = 323829^2 + 168399^2 .

It is a super-2 number, since 2×133223444442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133223444397 and 133223444406.

It is not an unprimeable number, because it can be changed into a prime (133223444449) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3378609 + ... + 3417812.

Almost surely, 2^133223444442 is an apocalyptic number.

133223444442 is an abundant number, since it is smaller than the sum of its proper divisors (194901013296).

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

133223444442 is a wasteful number, since it uses less digits than its factorization.

133223444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6796457 (or 6796437 counting only the distinct ones).

The product of its digits is 221184, while the sum is 36.

Adding to 133223444442 its reverse (244444322331), we get a palindrome (377667766773).

The spelling of 133223444442 in words is "one hundred thirty-three billion, two hundred twenty-three million, four hundred forty-four thousand, four hundred forty-two".