2012123455 has 16 divisors (see below), whose sum is σ = 2513793024. Its totient is φ = 1544728320.

The previous prime is 2012123453. The next prime is 2012123483. The reversal of 2012123455 is 5543212102.

It is not a de Polignac number, because 2012123455 - 2¹ = 2012123453 is a prime.

It is a super-2 number, since 2×2012123455² = 8097281596322274050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012123453) 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, 60991 + ... + 88000.

It is an arithmetic number, because the mean of its divisors is an integer number (157112064).

Almost surely, 2^2012123455 is an apocalyptic number.

2012123455 is a deficient number, since it is larger than the sum of its proper divisors (501669569).

2012123455 is a wasteful number, since it uses less digits than its factorization.

2012123455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149106.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2012123455 is about 44856.6991094976. The cubic root of 2012123455 is about 1262.4616892600.

Adding to 2012123455 its reverse (5543212102), we get a palindrome (7555335557).

The spelling of 2012123455 in words is "two billion, twelve million, one hundred twenty-three thousand, four hundred fifty-five".