221442120302 has 32 divisors (see below), whose sum is σ = 373371102720. Its totient is φ = 97733132640.

The previous prime is 221442120287. The next prime is 221442120359. The reversal of 221442120302 is 203021244122.

It is a super-2 number, since 2×221442120302² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2174177 + ... + 2273747.

It is an arithmetic number, because the mean of its divisors is an integer number (11667846960).

Almost surely, 2^221442120302 is an apocalyptic number.

221442120302 is a deficient number, since it is larger than the sum of its proper divisors (151928982418).

221442120302 is a wasteful number, since it uses less digits than its factorization.

221442120302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103328.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221442120302 its reverse (203021244122), we get a palindrome (424463364424).

The spelling of 221442120302 in words is "two hundred twenty-one billion, four hundred forty-two million, one hundred twenty thousand, three hundred two".