12011221334 has 32 divisors (see below), whose sum is σ = 21735432000. Its totient is φ = 4970152320.

The previous prime is 12011221331. The next prime is 12011221337. The reversal of 12011221334 is 43312211021.

It is an interprime number because it is at equal distance from previous prime (12011221331) and next prime (12011221337).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011221331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281987 + ... + 321774.

It is an arithmetic number, because the mean of its divisors is an integer number (679232250).

Almost surely, 2^12011221334 is an apocalyptic number.

12011221334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12011221334 is a deficient number, since it is larger than the sum of its proper divisors (9724210666).

12011221334 is an equidigital number, since it uses as much as digits as its factorization.

12011221334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603813 (or 603799 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12011221334 its reverse (43312211021), we get a palindrome (55323432355).

The spelling of 12011221334 in words is "twelve billion, eleven million, two hundred twenty-one thousand, three hundred thirty-four".