12421134212 has 12 divisors (see below), whose sum is σ = 21784139916. Its totient is φ = 6197094240.

The previous prime is 12421134191. The next prime is 12421134251. The reversal of 12421134212 is 21243112421.

It can be written as a sum of positive squares in 2 ways, for example, as 5332504576 + 7088629636 = 73024^2 + 84194^2 .

It is a super-2 number, since 2×12421134212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3366143 + ... + 3369830.

It is an arithmetic number, because the mean of its divisors is an integer number (1815344993).

Almost surely, 2^12421134212 is an apocalyptic number.

It is an amenable number.

12421134212 is a deficient number, since it is larger than the sum of its proper divisors (9363005704).

12421134212 is a wasteful number, since it uses less digits than its factorization.

12421134212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736438 (or 6736436 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

Adding to 12421134212 its reverse (21243112421), we get a palindrome (33664246633).

The spelling of 12421134212 in words is "twelve billion, four hundred twenty-one million, one hundred thirty-four thousand, two hundred twelve".