12212011134 has 24 divisors (see below), whose sum is σ = 26732138160. Its totient is φ = 4028704128.

The previous prime is 12212011087. The next prime is 12212011139. The reversal of 12212011134 is 43111021221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212011139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3495394 + ... + 3498885.

It is an arithmetic number, because the mean of its divisors is an integer number (1113839090).

Almost surely, 2^12212011134 is an apocalyptic number.

12212011134 is an abundant number, since it is smaller than the sum of its proper divisors (14520127026).

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

12212011134 is a wasteful number, since it uses less digits than its factorization.

12212011134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994384 (or 6994381 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12212011134 its reverse (43111021221), we get a palindrome (55323032355).

The spelling of 12212011134 in words is "twelve billion, two hundred twelve million, eleven thousand, one hundred thirty-four".