1323212122112 has 24 divisors (see below), whose sum is σ = 2645778148650. Its totient is φ = 661606060032.

The previous prime is 1323212122109. The next prime is 1323212122181. The reversal of 1323212122112 is 2112212123231.

It can be written as a sum of positive squares in only one way, i.e., 1138710946816 + 184501175296 = 1067104^2 + 429536^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323047787 + ... + 323051882.

Almost surely, 2^{1323212122112} is an apocalyptic number.

It is an amenable number.

1323212122112 is a deficient number, since it is larger than the sum of its proper divisors (1322566026538).

1323212122112 is an frugal number, since it uses more digits than its factorization.

1323212122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646099691 (or 646099671 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 1323212122112 its reverse (2112212123231), we get a palindrome (3435424245343).

The spelling of 1323212122112 in words is "one trillion, three hundred twenty-three billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twelve".