12126223512 has 48 divisors (see below), whose sum is σ = 35368154640. Its totient is φ = 3731145408.

The previous prime is 12126223481. The next prime is 12126223609. The reversal of 12126223512 is 21532262121.

12126223512 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 622 + 35 + 1 + 2 = 666.

It is a super-2 number, since 2×12126223512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6476748 + ... + 6478619.

It is an arithmetic number, because the mean of its divisors is an integer number (736836555).

Almost surely, 2^12126223512 is an apocalyptic number.

12126223512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12126223512 is an abundant number, since it is smaller than the sum of its proper divisors (23241931128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12126223512 is a wasteful number, since it uses less digits than its factorization.

12126223512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12955392 (or 12955385 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 12126223512 its reverse (21532262121), we get a palindrome (33658485633).

The spelling of 12126223512 in words is "twelve billion, one hundred twenty-six million, two hundred twenty-three thousand, five hundred twelve".