221240221112 has 16 divisors (see below), whose sum is σ = 420076370400. Its totient is φ = 109219855680.

The previous prime is 221240221099. The next prime is 221240221121. The reversal of 221240221112 is 211122042122.

It is a happy number.

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, 175031189 + ... + 175032452.

It is an arithmetic number, because the mean of its divisors is an integer number (26254773150).

Almost surely, 2^221240221112 is an apocalyptic number.

It is an amenable number.

221240221112 is a deficient number, since it is larger than the sum of its proper divisors (198836149288).

221240221112 is a wasteful number, since it uses less digits than its factorization.

221240221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350063726 (or 350063722 counting only the distinct ones).

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

Adding to 221240221112 its reverse (211122042122), we get a palindrome (432362263234).

The spelling of 221240221112 in words is "two hundred twenty-one billion, two hundred forty million, two hundred twenty-one thousand, one hundred twelve".