1056220000 has 120 divisors (see below), whose sum is σ = 2835273672. Its totient is φ = 384000000.

The previous prime is 1056219977. The next prime is 1056220001. The reversal of 1056220000 is 226501.

It is a happy number.

It is a super-2 number, since 2×1056220000² = 2231201376800000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056220001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 217600 + ... + 222400.

Almost surely, 2^1056220000 is an apocalyptic number.

1056220000 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 1056220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417636836).

1056220000 is an abundant number, since it is smaller than the sum of its proper divisors (1779053672).

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

1056220000 is an equidigital number, since it uses as much as digits as its factorization.

1056220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842 (or 4819 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1056220000 is about 32499.5384582612. The cubic root of 1056220000 is about 1018.3993862906.

Adding to 1056220000 its reverse (226501), we get a palindrome (1056446501).

The spelling of 1056220000 in words is "one billion, fifty-six million, two hundred twenty thousand".