221100210022 has 4 divisors (see below), whose sum is σ = 331650315036. Its totient is φ = 110550105010.

The previous prime is 221100209971. The next prime is 221100210029. The reversal of 221100210022 is 220012001122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 221100209984 and 221100210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100210029) by changing a digit.

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 as a sum of consecutive naturals, namely, 55275052504 + ... + 55275052507.

It is an arithmetic number, because the mean of its divisors is an integer number (82912578759).

Almost surely, 2^221100210022 is an apocalyptic number.

221100210022 is a deficient number, since it is larger than the sum of its proper divisors (110550105014).

221100210022 is a wasteful number, since it uses less digits than its factorization.

221100210022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110550105013.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221100210022 its reverse (220012001122), we get a palindrome (441112211144).

The spelling of 221100210022 in words is "two hundred twenty-one billion, one hundred million, two hundred ten thousand, twenty-two".