2212019231 has 4 divisors (see below), whose sum is σ = 2212784112. Its totient is φ = 2211254352.

The previous prime is 2212019213. The next prime is 2212019237. The reversal of 2212019231 is 1329102122.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2212019231 is a prime.

It is a super-2 number, since 2×2212019231² = 9786058156627662722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212019197 and 2212019206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212019237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378086 + ... + 383891.

It is an arithmetic number, because the mean of its divisors is an integer number (553196028).

Almost surely, 2^2212019231 is an apocalyptic number.

2212019231 is a deficient number, since it is larger than the sum of its proper divisors (764881).

2212019231 is an equidigital number, since it uses as much as digits as its factorization.

2212019231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764880.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2212019231 is about 47032.1085111012. The cubic root of 2212019231 is about 1302.9556479971.

The spelling of 2212019231 in words is "two billion, two hundred twelve million, nineteen thousand, two hundred thirty-one".