1223401013444 has 12 divisors (see below), whose sum is σ = 2141437391100. Its totient is φ = 611561758848.

The previous prime is 1223401013441. The next prime is 1223401013477. The reversal of 1223401013444 is 4443101043221.

It can be written as a sum of positive squares in 2 ways, for example, as 172796513344 + 1050604500100 = 415688^2 + 1024990^2 .

It is a super-2 number, since 2×1223401013444² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223401013441) 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, 34667129 + ... + 34702400.

It is an arithmetic number, because the mean of its divisors is an integer number (178453115925).

Almost surely, 2^{1223401013444} is an apocalyptic number.

It is an amenable number.

1223401013444 is a deficient number, since it is larger than the sum of its proper divisors (918036377656).

1223401013444 is a wasteful number, since it uses less digits than its factorization.

1223401013444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69373942 (or 69373940 counting only the distinct ones).

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

Adding to 1223401013444 its reverse (4443101043221), we get a palindrome (5666502056665).

The spelling of 1223401013444 in words is "one trillion, two hundred twenty-three billion, four hundred one million, thirteen thousand, four hundred forty-four".