1022221200 has 960 divisors, whose sum is σ = 4711698432. Its totient is φ = 182476800.

The previous prime is 1022221181. The next prime is 1022221217. The reversal of 1022221200 is 21222201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 27627582 + ... + 27627618.

Almost surely, 2^1022221200 is an apocalyptic number.

1022221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2355849216).

1022221200 is an abundant number, since it is smaller than the sum of its proper divisors (3689477232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022221200 is a wasteful number, since it uses less digits than its factorization.

1022221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 101 counting only the distinct ones).

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

The square root of 1022221200 is about 31972.1941693091. The cubic root of 1022221200 is about 1007.3528694671.

Adding to 1022221200 its reverse (21222201), we get a palindrome (1043443401).

It can be divided in two parts, 1022 and 221200, that added together give a palindrome (222222).

The spelling of 1022221200 in words is "one billion, twenty-two million, two hundred twenty-one thousand, two hundred".