221440133442 has 32 divisors (see below), whose sum is σ = 491062480704. Its totient is φ = 66003019200.

The previous prime is 221440133437. The next prime is 221440133461. The reversal of 221440133442 is 244331044122.

221440133442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27497233 + ... + 27505284.

It is an arithmetic number, because the mean of its divisors is an integer number (15345702522).

Almost surely, 2^221440133442 is an apocalyptic number.

221440133442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221440133442 is an abundant number, since it is smaller than the sum of its proper divisors (269622347262).

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

221440133442 is a wasteful number, since it uses less digits than its factorization.

221440133442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55002594.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 221440133442 its reverse (244331044122), we get a palindrome (465771177564).

The spelling of 221440133442 in words is "two hundred twenty-one billion, four hundred forty million, one hundred thirty-three thousand, four hundred forty-two".