126111121212 has 24 divisors (see below), whose sum is σ = 294481067776. Its totient is φ = 42005356848.

The previous prime is 126111121211. The next prime is 126111121259. The reversal of 126111121212 is 212121111621.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126111121211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3943858 + ... + 3975705.

Almost surely, 2^126111121212 is an apocalyptic number.

126111121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126111121212 is an abundant number, since it is smaller than the sum of its proper divisors (168369946564).

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

126111121212 is a wasteful number, since it uses less digits than its factorization.

126111121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7920897 (or 7920895 counting only the distinct ones).

The product of its digits is 96, while the sum is 21.

Adding to 126111121212 its reverse (212121111621), we get a palindrome (338232232833).

The spelling of 126111121212 in words is "one hundred twenty-six billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".