221022222042 has 16 divisors (see below), whose sum is σ = 442049258880. Its totient is φ = 73673271552.

The previous prime is 221022221989. The next prime is 221022222061. The reversal of 221022222042 is 240222220122.

It is a happy number.

221022222042 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 7 ways as a sum of consecutive naturals, for example, 723834 + ... + 982842.

It is an arithmetic number, because the mean of its divisors is an integer number (27628078680).

Almost surely, 2^221022222042 is an apocalyptic number.

221022222042 is an abundant number, since it is smaller than the sum of its proper divisors (221027036838).

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

221022222042 is a wasteful number, since it uses less digits than its factorization.

221022222042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401237.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 221022222042 its reverse (240222220122), we get a palindrome (461244442164).

The spelling of 221022222042 in words is "two hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, forty-two".