134256221212 has 24 divisors (see below), whose sum is σ = 235354968576. Its totient is φ = 67012012848.

The previous prime is 134256221179. The next prime is 134256221213. The reversal of 134256221212 is 212122652431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134256221213) 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, 10529313 + ... + 10542055.

It is an arithmetic number, because the mean of its divisors is an integer number (9806457024).

Almost surely, 2^134256221212 is an apocalyptic number.

It is an amenable number.

134256221212 is a deficient number, since it is larger than the sum of its proper divisors (101098747364).

134256221212 is a wasteful number, since it uses less digits than its factorization.

134256221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17097 (or 17095 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

Adding to 134256221212 its reverse (212122652431), we get a palindrome (346378873643).

The spelling of 134256221212 in words is "one hundred thirty-four billion, two hundred fifty-six million, two hundred twenty-one thousand, two hundred twelve".