2221130031 has 4 divisors (see below), whose sum is σ = 2961506712. Its totient is φ = 1480753352.

The previous prime is 2221130011. The next prime is 2221130057. The reversal of 2221130031 is 1300311222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221130031 - 2¹⁹ = 2220605743 is a prime.

It is a super-2 number, since 2×2221130031² = 9866837229220121922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221130011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370188336 + ... + 370188341.

It is an arithmetic number, because the mean of its divisors is an integer number (740376678).

Almost surely, 2^2221130031 is an apocalyptic number.

2221130031 is a deficient number, since it is larger than the sum of its proper divisors (740376681).

2221130031 is an equidigital number, since it uses as much as digits as its factorization.

2221130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740376680.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2221130031 is about 47128.8662180622. The cubic root of 2221130031 is about 1304.7420561516.

Adding to 2221130031 its reverse (1300311222), we get a palindrome (3521441253).

The spelling of 2221130031 in words is "two billion, two hundred twenty-one million, one hundred thirty thousand, thirty-one".