221131000010 has 16 divisors (see below), whose sum is σ = 398109052872. Its totient is φ = 88436121600.

The previous prime is 221131000001. The next prime is 221131000043. The reversal of 221131000010 is 10000131122.

It can be written as a sum of positive squares in 4 ways, for example, as 121831015849 + 99299984161 = 349043^2 + 315119^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221130999955 and 221131000000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1977671 + ... + 2086490.

Almost surely, 2^221131000010 is an apocalyptic number.

221131000010 is a deficient number, since it is larger than the sum of its proper divisors (176978052862).

221131000010 is a wasteful number, since it uses less digits than its factorization.

221131000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069609.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 221131000010 its reverse (10000131122), we get a palindrome (231131131132).

The spelling of 221131000010 in words is "two hundred twenty-one billion, one hundred thirty-one million, ten", and thus it is an aban number.