221221020201112 has 32 divisors (see below), whose sum is σ = 421840505782800. Its totient is φ = 108730403227264.

The previous prime is 221221020201109. The next prime is 221221020201121. The reversal of 221221020201112 is 211102020122122.

It is a self number, because there is not a number n which added to its sum of digits gives 221221020201112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928143 + ... + 21122494.

Almost surely, 2^{221221020201112} is an apocalyptic number.

It is an amenable number.

221221020201112 is a deficient number, since it is larger than the sum of its proper divisors (200619485581688).

221221020201112 is a wasteful number, since it uses less digits than its factorization.

221221020201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23071035 (or 23071031 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221221020201112 its reverse (211102020122122), we get a palindrome (432323040323234).

The spelling of 221221020201112 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, twenty million, two hundred one thousand, one hundred twelve".