221222010442 has 16 divisors (see below), whose sum is σ = 338959474560. Its totient is φ = 108236438208.

The previous prime is 221222010437. The next prime is 221222010479. The reversal of 221222010442 is 244010222122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259618 + ... + 714034.

It is an arithmetic number, because the mean of its divisors is an integer number (21184967160).

Almost surely, 2^221222010442 is an apocalyptic number.

221222010442 is a deficient number, since it is larger than the sum of its proper divisors (117737464118).

221222010442 is a wasteful number, since it uses less digits than its factorization.

221222010442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459645.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221222010442 its reverse (244010222122), we get a palindrome (465232232564).

The spelling of 221222010442 in words is "two hundred twenty-one billion, two hundred twenty-two million, ten thousand, four hundred forty-two".