1212101323 has 4 divisors (see below), whose sum is σ = 1212199128. Its totient is φ = 1212003520.

The previous prime is 1212101321. The next prime is 1212101347. The reversal of 1212101323 is 3231012121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1212101323 - 2¹ = 1212101321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212101297 and 1212101306.

It is not an unprimeable number, because it can be changed into a prime (1212101321) 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, 27061 + ... + 56182.

It is an arithmetic number, because the mean of its divisors is an integer number (303049782).

Almost surely, 2^1212101323 is an apocalyptic number.

1212101323 is a deficient number, since it is larger than the sum of its proper divisors (97805).

1212101323 is an equidigital number, since it uses as much as digits as its factorization.

1212101323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97804.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1212101323 is about 34815.2455542109. The cubic root of 1212101323 is about 1066.2187325054.

Adding to 1212101323 its reverse (3231012121), we get a palindrome (4443113444).

The spelling of 1212101323 in words is "one billion, two hundred twelve million, one hundred one thousand, three hundred twenty-three".