12012201321134 has 64 divisors (see below), whose sum is σ = 21745463040000. Its totient is φ = 4865347289088.

The previous prime is 12012201321119. The next prime is 12012201321139. The reversal of 12012201321134 is 43112310221021.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012201321139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18388142 + ... + 19030190.

It is an arithmetic number, because the mean of its divisors is an integer number (339772860000).

Almost surely, 2^{12012201321134} is an apocalyptic number.

12012201321134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12012201321134 is a deficient number, since it is larger than the sum of its proper divisors (9733261718866).

12012201321134 is a wasteful number, since it uses less digits than its factorization.

12012201321134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642777.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12012201321134 its reverse (43112310221021), we get a palindrome (55124511542155).

The spelling of 12012201321134 in words is "twelve trillion, twelve billion, two hundred one million, three hundred twenty-one thousand, one hundred thirty-four".