221002022021212 has 12 divisors (see below), whose sum is σ = 387592483309416. Its totient is φ = 110261312504240.

The previous prime is 221002022021161. The next prime is 221002022021239. The reversal of 221002022021212 is 212120220200122.

It is a self number, because there is not a number n which added to its sum of digits gives 221002022021212.

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, 59924624518 + ... + 59924628205.

It is an arithmetic number, because the mean of its divisors is an integer number (32299373609118).

Almost surely, 2^{221002022021212} is an apocalyptic number.

It is an amenable number.

221002022021212 is a deficient number, since it is larger than the sum of its proper divisors (166590461288204).

221002022021212 is a wasteful number, since it uses less digits than its factorization.

221002022021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119849253188 (or 119849253186 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221002022021212 its reverse (212120220200122), we get a palindrome (433122242221334).

The spelling of 221002022021212 in words is "two hundred twenty-one trillion, two billion, twenty-two million, twenty-one thousand, two hundred twelve".