10220212221 has 32 divisors (see below), whose sum is σ = 14042585088. Its totient is φ = 6609449280.

The previous prime is 10220212217. The next prime is 10220212231. The reversal of 10220212221 is 12221202201.

It is not a de Polignac number, because 10220212221 - 2² = 10220212217 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10220212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220212231) 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, 4896040 + ... + 4898126.

It is an arithmetic number, because the mean of its divisors is an integer number (438830784).

Almost surely, 2^10220212221 is an apocalyptic number.

It is an amenable number.

10220212221 is a deficient number, since it is larger than the sum of its proper divisors (3822372867).

10220212221 is a wasteful number, since it uses less digits than its factorization.

10220212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10220212221 its reverse (12221202201), we get a palindrome (22441414422).

The spelling of 10220212221 in words is "ten billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-one".