1921124211323 has 8 divisors (see below), whose sum is σ = 1924705167408. Its totient is φ = 1917544126464.

The previous prime is 1921124211319. The next prime is 1921124211389. The reversal of 1921124211323 is 3231124211291.

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 1921124211323 - 2² = 1921124211319 is a prime.

It is a super-2 number, since 2×1921124211323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1921124211323.

It is not an unprimeable number, because it can be changed into a prime (1921124217323) 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, 4282940 + ... + 4710182.

It is an arithmetic number, because the mean of its divisors is an integer number (240588145926).

Almost surely, 2^{1921124211323} is an apocalyptic number.

1921124211323 is a deficient number, since it is larger than the sum of its proper divisors (3580956085).

1921124211323 is an equidigital number, since it uses as much as digits as its factorization.

1921124211323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435613.

The product of its digits is 5184, while the sum is 32.

Subtracting from 1921124211323 its sum of digits (32), we obtain a palindrome (1921124211291).

The spelling of 1921124211323 in words is "one trillion, nine hundred twenty-one billion, one hundred twenty-four million, two hundred eleven thousand, three hundred twenty-three".