221022124 has 24 divisors (see below), whose sum is σ = 391639248. Its totient is φ = 109132800.

The previous prime is 221022097. The next prime is 221022143. The reversal of 221022124 is 421220122.

221022124 is digitally balanced in base 2, 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 = 221022098 and 221022107.

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, 151599 + ... + 153049.

It is an arithmetic number, because the mean of its divisors is an integer number (16318302).

Almost surely, 2^221022124 is an apocalyptic number.

It is an amenable number.

221022124 is a deficient number, since it is larger than the sum of its proper divisors (170617124).

221022124 is a wasteful number, since it uses less digits than its factorization.

221022124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1903 counting only the distinct ones).

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

The square root of 221022124 is about 14866.8128393412. The cubic root of 221022124 is about 604.6145339591.

Adding to 221022124 its reverse (421220122), we get a palindrome (642242246).

The spelling of 221022124 in words is "two hundred twenty-one million, twenty-two thousand, one hundred twenty-four".