2123403210111 has 16 divisors (see below), whose sum is σ = 3038810723424. Its totient is φ = 1314080308224.

The previous prime is 2123403210073. The next prime is 2123403210199. The reversal of 2123403210111 is 1110123043212.

It is not a de Polignac number, because 2123403210111 - 2¹⁰ = 2123403209087 is a prime.

It is a super-2 number, since 2×2123403210111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123403210011) 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, 285169956 + ... + 285177401.

It is an arithmetic number, because the mean of its divisors is an integer number (189925670214).

Almost surely, 2^{2123403210111} is an apocalyptic number.

2123403210111 is a deficient number, since it is larger than the sum of its proper divisors (915407513313).

2123403210111 is a wasteful number, since it uses less digits than its factorization.

2123403210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570347450.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2123403210111 its reverse (1110123043212), we get a palindrome (3233526253323).

The spelling of 2123403210111 in words is "two trillion, one hundred twenty-three billion, four hundred three million, two hundred ten thousand, one hundred eleven".