2221251110 has 48 divisors (see below), whose sum is σ = 4574069136. Its totient is φ = 771896832.

The previous prime is 2221251083. The next prime is 2221251113. The reversal of 2221251110 is 111521222.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221251113) 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 23 ways as a sum of consecutive naturals, for example, 8009 + ... + 67131.

It is an arithmetic number, because the mean of its divisors is an integer number (95293107).

Almost surely, 2^2221251110 is an apocalyptic number.

2221251110 is an abundant number, since it is smaller than the sum of its proper divisors (2352818026).

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

2221251110 is a wasteful number, since it uses less digits than its factorization.

2221251110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59177 (or 59160 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2221251110 is about 47130.1507529946. The cubic root of 2221251110 is about 1304.7657639025.

Adding to 2221251110 its reverse (111521222), we get a palindrome (2332772332).

The spelling of 2221251110 in words is "two billion, two hundred twenty-one million, two hundred fifty-one thousand, one hundred ten".