2221271130 has 64 divisors (see below), whose sum is σ = 5751664128. Its totient is φ = 545771520.

The previous prime is 2221271123. The next prime is 2221271131. The reversal of 2221271130 is 311721222.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2221271097 and 2221271106.

It is not an unprimeable number, because it can be changed into a prime (2221271131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220095 + ... + 229965.

It is an arithmetic number, because the mean of its divisors is an integer number (89869752).

Almost surely, 2^2221271130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221271130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2875832064).

2221271130 is an abundant number, since it is smaller than the sum of its proper divisors (3530392998).

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

2221271130 is a wasteful number, since it uses less digits than its factorization.

2221271130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2221271130 is about 47130.3631430949. The cubic root of 2221271130 is about 1304.7696838153.

Adding to 2221271130 its reverse (311721222), we get a palindrome (2532992352).

The spelling of 2221271130 in words is "two billion, two hundred twenty-one million, two hundred seventy-one thousand, one hundred thirty".