1223310310138 has 64 divisors (see below), whose sum is σ = 2144240017920. Its totient is φ = 512629689600.

The previous prime is 1223310310099. The next prime is 1223310310139. The reversal of 1223310310138 is 8310130133221.

It is a super-2 number, since 2×1223310310138² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223310310139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67098808 + ... + 67117036.

It is an arithmetic number, because the mean of its divisors is an integer number (33503750280).

Almost surely, 2^{1223310310138} is an apocalyptic number.

1223310310138 is a deficient number, since it is larger than the sum of its proper divisors (920929707782).

1223310310138 is a wasteful number, since it uses less digits than its factorization.

1223310310138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18863.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 1223310310138 its reverse (8310130133221), we get a palindrome (9533440443359).

The spelling of 1223310310138 in words is "one trillion, two hundred twenty-three billion, three hundred ten million, three hundred ten thousand, one hundred thirty-eight".