2212222231 has 4 divisors (see below), whose sum is σ = 2328655000. Its totient is φ = 2095789464.

The previous prime is 2212222213. The next prime is 2212222249. The reversal of 2212222231 is 1322222122.

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

It is an interprime number because it is at equal distance from previous prime (2212222213) and next prime (2212222249).

It is a cyclic number.

It is not a de Polignac number, because 2212222231 - 2²⁹ = 1675351319 is a prime.

It is a super-2 number, since 2×2212222231² = 9787854398661234722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 116432749 = 2212222231 / (2 + 2 + 1 + 2 + 2 + 2 + 2 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212222199 and 2212222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212222531) 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, 58216356 + ... + 58216393.

It is an arithmetic number, because the mean of its divisors is an integer number (582163750).

Almost surely, 2^2212222231 is an apocalyptic number.

2212222231 is a deficient number, since it is larger than the sum of its proper divisors (116432769).

2212222231 is a wasteful number, since it uses less digits than its factorization.

2212222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116432768.

The product of its digits is 384, while the sum is 19.

The square root of 2212222231 is about 47034.2665617314. The cubic root of 2212222231 is about 1302.9955047792.

Adding to 2212222231 its reverse (1322222122), we get a palindrome (3534444353).

The spelling of 2212222231 in words is "two billion, two hundred twelve million, two hundred twenty-two thousand, two hundred thirty-one".