12011222021012 has 12 divisors (see below), whose sum is σ = 21044993956980. Its totient is φ = 5998366604736.

The previous prime is 12011222020961. The next prime is 12011222021017. The reversal of 12011222021012 is 21012022211021.

It can be written as a sum of positive squares in 2 ways, for example, as 7614928554256 + 4396293466756 = 2759516^2 + 2096734^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011222021017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811097713 + ... + 1811104344.

It is an arithmetic number, because the mean of its divisors is an integer number (1753749496415).

Almost surely, 2^{12011222021012} is an apocalyptic number.

It is an amenable number.

12011222021012 is a deficient number, since it is larger than the sum of its proper divisors (9033771935968).

12011222021012 is a wasteful number, since it uses less digits than its factorization.

12011222021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622202890 (or 3622202888 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12011222021012 its reverse (21012022211021), we get a palindrome (33023244232033).

The spelling of 12011222021012 in words is "twelve trillion, eleven billion, two hundred twenty-two million, twenty-one thousand, twelve".