2011321321323 has 16 divisors (see below), whose sum is σ = 2798543394816. Its totient is φ = 1282497701760.

The previous prime is 2011321321253. The next prime is 2011321321337. The reversal of 2011321321323 is 3231231231102.

It is not a de Polignac number, because 2011321321323 - 2¹⁰ = 2011321320299 is a prime.

It is a super-2 number, since 2×2011321321323² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011321321293 and 2011321321302.

It is not an unprimeable number, because it can be changed into a prime (2011321321123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115011 + ... + 2008947.

It is an arithmetic number, because the mean of its divisors is an integer number (174908962176).

Almost surely, 2^{2011321321323} is an apocalyptic number.

2011321321323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2011321321323 is a deficient number, since it is larger than the sum of its proper divisors (787222073493).

2011321321323 is a wasteful number, since it uses less digits than its factorization.

2011321321323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909354.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2011321321323 its reverse (3231231231102), we get a palindrome (5242552552425).

The spelling of 2011321321323 in words is "two trillion, eleven billion, three hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-three".