2221012243 has 8 divisors (see below), whose sum is σ = 2352765312. Its totient is φ = 2089382016.

The previous prime is 2221012229. The next prime is 2221012249. The reversal of 2221012243 is 3422101222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221012243 - 2²¹ = 2218915091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221012243.

It is not an unprimeable number, because it can be changed into a prime (2221012249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7921 + ... + 67117.

It is an arithmetic number, because the mean of its divisors is an integer number (294095664).

Almost surely, 2^2221012243 is an apocalyptic number.

2221012243 is a deficient number, since it is larger than the sum of its proper divisors (131753069).

2221012243 is a wasteful number, since it uses less digits than its factorization.

2221012243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61421.

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

The square root of 2221012243 is about 47127.6165639639. The cubic root of 2221012243 is about 1304.7189919647.

Adding to 2221012243 its reverse (3422101222), we get a palindrome (5643113465).

It can be divided in two parts, 22210 and 12243, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 2221012243 in words is "two billion, two hundred twenty-one million, twelve thousand, two hundred forty-three".