10222056221 has 32 divisors (see below), whose sum is σ = 12138336000. Its totient is φ = 8517408768.

The previous prime is 10222056209. The next prime is 10222056223. The reversal of 10222056221 is 12265022201.

It is not a de Polignac number, because 10222056221 - 2¹⁰ = 10222055197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

10222056221 is a modest number, since divided by 56221 gives 10222 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222056223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1524845 + ... + 1531533.

It is an arithmetic number, because the mean of its divisors is an integer number (379323000).

Almost surely, 2^10222056221 is an apocalyptic number.

It is an amenable number.

10222056221 is a deficient number, since it is larger than the sum of its proper divisors (1916279779).

10222056221 is a wasteful number, since it uses less digits than its factorization.

10222056221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 10222056221 its reverse (12265022201), we get a palindrome (22487078422).

The spelling of 10222056221 in words is "ten billion, two hundred twenty-two million, fifty-six thousand, two hundred twenty-one".