10122220243 has 4 divisors (see below), whose sum is σ = 10122577168. Its totient is φ = 10121863320.

The previous prime is 10122220237. The next prime is 10122220271. The reversal of 10122220243 is 34202222101.

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-10122220243 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 10122220243.

It is not an unprimeable number, because it can be changed into a prime (10122220643) 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, 131868 + ... + 193993.

It is an arithmetic number, because the mean of its divisors is an integer number (2530644292).

Almost surely, 2^10122220243 is an apocalyptic number.

10122220243 is a deficient number, since it is larger than the sum of its proper divisors (356925).

10122220243 is an equidigital number, since it uses as much as digits as its factorization.

10122220243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356924.

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

Adding to 10122220243 its reverse (34202222101), we get a palindrome (44324442344).

The spelling of 10122220243 in words is "ten billion, one hundred twenty-two million, two hundred twenty thousand, two hundred forty-three".