2220001231 has 4 divisors (see below), whose sum is σ = 2537144272. Its totient is φ = 1902858192.

The previous prime is 2220001187. The next prime is 2220001261. The reversal of 2220001231 is 1321000222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321000222 = 2 ⋅660500111.

It is a cyclic number.

It is not a de Polignac number, because 2220001231 - 2³¹ = 72517583 is a prime.

It is a super-2 number, since 2×2220001231² = 9856810931283030722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220001261) 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, 158571510 + ... + 158571523.

It is an arithmetic number, because the mean of its divisors is an integer number (634286068).

Almost surely, 2^2220001231 is an apocalyptic number.

2220001231 is a deficient number, since it is larger than the sum of its proper divisors (317143041).

2220001231 is an equidigital number, since it uses as much as digits as its factorization.

2220001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317143040.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2220001231 is about 47116.8890208172. The cubic root of 2220001231 is about 1304.5209911413.

Adding to 2220001231 its reverse (1321000222), we get a palindrome (3541001453).

The spelling of 2220001231 in words is "two billion, two hundred twenty million, one thousand, two hundred thirty-one".