221010130 has 24 divisors (see below), whose sum is σ = 437273676. Its totient is φ = 80366880.

The previous prime is 221010113. The next prime is 221010133. The reversal of 221010130 is 31010122.

It can be written as a sum of positive squares in 2 ways, for example, as 204175521 + 16834609 = 14289^2 + 4103^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (221010133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90117 + ... + 92536.

Almost surely, 2^221010130 is an apocalyptic number.

221010130 is a deficient number, since it is larger than the sum of its proper divisors (216263546).

221010130 is a wasteful number, since it uses less digits than its factorization.

221010130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182682 (or 182671 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 221010130 is about 14866.4094521845. The cubic root of 221010130 is about 604.6035970783.

Adding to 221010130 its reverse (31010122), we get a palindrome (252020252).

The spelling of 221010130 in words is "two hundred twenty-one million, ten thousand, one hundred thirty".