1211444210323 has 4 divisors (see below), whose sum is σ = 1253218148640. Its totient is φ = 1169670272008.

The previous prime is 1211444210297. The next prime is 1211444210341. The reversal of 1211444210323 is 3230124441121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211444210323 is a prime.

It is a super-3 number, since 3×1211444210323³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211444210291 and 1211444210300.

It is not an unprimeable number, because it can be changed into a prime (1211444210393) 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, 20886969115 + ... + 20886969172.

It is an arithmetic number, because the mean of its divisors is an integer number (313304537160).

Almost surely, 2^{1211444210323} is an apocalyptic number.

1211444210323 is a deficient number, since it is larger than the sum of its proper divisors (41773938317).

1211444210323 is an equidigital number, since it uses as much as digits as its factorization.

1211444210323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41773938316.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1211444210323 its reverse (3230124441121), we get a palindrome (4441568651444).

The spelling of 1211444210323 in words is "one trillion, two hundred eleven billion, four hundred forty-four million, two hundred ten thousand, three hundred twenty-three".