1123213111312 has 10 divisors (see below), whose sum is σ = 2176225403198. Its totient is φ = 561606555648.

The previous prime is 1123213111291. The next prime is 1123213111331. The reversal of 1123213111312 is 2131113123211.

It can be written as a sum of positive squares in only one way, i.e., 1088633477376 + 34579633936 = 1043376^2 + 185956^2 .

It is a super-2 number, since 2×1123213111312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35100409713 + ... + 35100409744.

Almost surely, 2^{1123213111312} is an apocalyptic number.

It is an amenable number.

1123213111312 is a deficient number, since it is larger than the sum of its proper divisors (1053012291886).

1123213111312 is an equidigital number, since it uses as much as digits as its factorization.

1123213111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70200819465 (or 70200819459 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

Adding to 1123213111312 its reverse (2131113123211), we get a palindrome (3254326234523).

The spelling of 1123213111312 in words is "one trillion, one hundred twenty-three billion, two hundred thirteen million, one hundred eleven thousand, three hundred twelve".