221042122 has 16 divisors (see below), whose sum is σ = 380304000. Its totient is φ = 94388688.

The previous prime is 221042119. The next prime is 221042137. The reversal of 221042122 is 221240122.

221042122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221042096 and 221042105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24622 + ... + 32377.

It is an arithmetic number, because the mean of its divisors is an integer number (23769000).

Almost surely, 2^221042122 is an apocalyptic number.

221042122 is a deficient number, since it is larger than the sum of its proper divisors (159261878).

221042122 is a wasteful number, since it uses less digits than its factorization.

221042122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57285.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 221042122 is about 14867.4853959908. The cubic root of 221042122 is about 604.6327685090.

Adding to 221042122 its reverse (221240122), we get a palindrome (442282244).

The spelling of 221042122 in words is "two hundred twenty-one million, forty-two thousand, one hundred twenty-two".