1051228100 has 36 divisors (see below), whose sum is σ = 2456642244. Its totient is φ = 388145280.

The previous prime is 1051228097. The next prime is 1051228111. The reversal of 1051228100 is 18221501.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 61748164 + 989479936 = 7858^2 + 31456^2 .

It is a super-2 number, since 2×1051228100² = 2210161036459220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 403019 + ... + 405618.

Almost surely, 2^1051228100 is an apocalyptic number.

1051228100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051228100 is an abundant number, since it is smaller than the sum of its proper divisors (1405414144).

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

1051228100 is a wasteful number, since it uses less digits than its factorization.

1051228100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808664 (or 808657 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1051228100 is about 32422.6479486176. The cubic root of 1051228100 is about 1016.7924679349.

Adding to 1051228100 its reverse (18221501), we get a palindrome (1069449601).

The spelling of 1051228100 in words is "one billion, fifty-one million, two hundred twenty-eight thousand, one hundred".