2101123011223 has 16 divisors (see below), whose sum is σ = 2199761565120. Its totient is φ = 2003093224704.

The previous prime is 2101123011173. The next prime is 2101123011257. The reversal of 2101123011223 is 3221103211012.

It is a cyclic number.

It is not a de Polignac number, because 2101123011223 - 2¹⁷ = 2101122880151 is a prime.

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 2101123011223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101123011623) 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, 80709373 + ... + 80735401.

It is an arithmetic number, because the mean of its divisors is an integer number (137485097820).

Almost surely, 2^{2101123011223} is an apocalyptic number.

2101123011223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2101123011223 is a deficient number, since it is larger than the sum of its proper divisors (98638553897).

2101123011223 is a wasteful number, since it uses less digits than its factorization.

2101123011223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37578.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2101123011223 its reverse (3221103211012), we get a palindrome (5322226222235).

The spelling of 2101123011223 in words is "two trillion, one hundred one billion, one hundred twenty-three million, eleven thousand, two hundred twenty-three".