1000221140 has 24 divisors (see below), whose sum is σ = 2103384192. Its totient is φ = 399532320.

The previous prime is 1000221137. The next prime is 1000221143. The reversal of 1000221140 is 411220001.

It is an interprime number because it is at equal distance from previous prime (1000221137) and next prime (1000221143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221143) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19856 + ... + 48935.

It is an arithmetic number, because the mean of its divisors is an integer number (87641008).

Almost surely, 2^1000221140 is an apocalyptic number.

1000221140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000221140 is an abundant number, since it is smaller than the sum of its proper divisors (1103163052).

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

1000221140 is a wasteful number, since it uses less digits than its factorization.

1000221140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69527 (or 69525 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1000221140 is about 31626.2729388083. The cubic root of 1000221140 is about 1000.0737079003.

Adding to 1000221140 its reverse (411220001), we get a palindrome (1411441141).

The spelling of 1000221140 in words is "one billion, two hundred twenty-one thousand, one hundred forty".