1211231101323 has 8 divisors (see below), whose sum is σ = 1615835211408. Its totient is φ = 807057196064.

The previous prime is 1211231101261. The next prime is 1211231101357. The reversal of 1211231101323 is 3231011321121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211231101323 - 2²¹ = 1211229004171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211231101323.

It is not an unprimeable number, because it can be changed into a prime (1211231101393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107544636 + ... + 107555897.

It is an arithmetic number, because the mean of its divisors is an integer number (201979401426).

Almost surely, 2^{1211231101323} is an apocalyptic number.

1211231101323 is a deficient number, since it is larger than the sum of its proper divisors (404604110085).

1211231101323 is a wasteful number, since it uses less digits than its factorization.

1211231101323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215102413.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1211231101323 its reverse (3231011321121), we get a palindrome (4442242422444).

The spelling of 1211231101323 in words is "one trillion, two hundred eleven billion, two hundred thirty-one million, one hundred one thousand, three hundred twenty-three".