1022200221 has 48 divisors (see below), whose sum is σ = 1639713984. Its totient is φ = 564350976.

The previous prime is 1022200219. The next prime is 1022200279. The reversal of 1022200221 is 1220022201.

It is not a de Polignac number, because 1022200221 - 2¹ = 1022200219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022200197 and 1022200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022208221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 885981 + ... + 887133.

It is an arithmetic number, because the mean of its divisors is an integer number (34160708).

Almost surely, 2^1022200221 is an apocalyptic number.

It is an amenable number.

1022200221 is a deficient number, since it is larger than the sum of its proper divisors (617513763).

1022200221 is a wasteful number, since it uses less digits than its factorization.

1022200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1363 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1022200221 is about 31971.8660856698. The cubic root of 1022200221 is about 1007.3459781339.

Adding to 1022200221 its reverse (1220022201), we get a palindrome (2242222422).

The spelling of 1022200221 in words is "one billion, twenty-two million, two hundred thousand, two hundred twenty-one".