1222121234243 has 16 divisors (see below), whose sum is σ = 1512843734976. Its totient is φ = 961363728000.

The previous prime is 1222121234227. The next prime is 1222121234293. The reversal of 1222121234243 is 3424321212221.

It is not a de Polignac number, because 1222121234243 - 2⁴ = 1222121234227 is a prime.

It is a super-2 number, since 2×1222121234243² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222121234293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38799008 + ... + 38830493.

It is an arithmetic number, because the mean of its divisors is an integer number (94552733436).

Almost surely, 2^{1222121234243} is an apocalyptic number.

1222121234243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1222121234243 is a deficient number, since it is larger than the sum of its proper divisors (290722500733).

1222121234243 is a wasteful number, since it uses less digits than its factorization.

1222121234243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77629694.

The product of its digits is 9216, while the sum is 29.

Adding to 1222121234243 its reverse (3424321212221), we get a palindrome (4646442446464).

The spelling of 1222121234243 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred thirty-four thousand, two hundred forty-three".