221212100221022 has 8 divisors (see below), whose sum is σ = 346245026432976. Its totient is φ = 105797091410032.

The previous prime is 221212100220971. The next prime is 221212100221037. The reversal of 221212100221022 is 220122001212122.

221212100221022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221212100220985 and 221212100221003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2404479350183 + ... + 2404479350274.

It is an arithmetic number, because the mean of its divisors is an integer number (43280628304122).

Almost surely, 2^{221212100221022} is an apocalyptic number.

221212100221022 is a deficient number, since it is larger than the sum of its proper divisors (125032926211954).

221212100221022 is a wasteful number, since it uses less digits than its factorization.

221212100221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808958700482.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221212100221022 its reverse (220122001212122), we get a palindrome (441334101433144).

The spelling of 221212100221022 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred million, two hundred twenty-one thousand, twenty-two".