221212142311022 has 32 divisors (see below), whose sum is σ = 346593932605440. Its totient is φ = 105690530658240.

The previous prime is 221212142310947. The next prime is 221212142311031. The reversal of 221212142311022 is 220113241212122.

It is a junction number, because it is equal to n+sod(n) for n = 221212142310982 and 221212142311000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209240122 + ... + 1209423042.

It is an arithmetic number, because the mean of its divisors is an integer number (10831060393920).

Almost surely, 2^{221212142311022} is an apocalyptic number.

221212142311022 is a deficient number, since it is larger than the sum of its proper divisors (125381790294418).

221212142311022 is a wasteful number, since it uses less digits than its factorization.

221212142311022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209288.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 221212142311022 its reverse (220113241212122), we get a palindrome (441325383523144).

The spelling of 221212142311022 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred forty-two million, three hundred eleven thousand, twenty-two".