12221012021211 has 24 divisors (see below), whose sum is σ = 20181490548960. Its totient is φ = 6980970306816.

The previous prime is 12221012021191. The next prime is 12221012021269. The reversal of 12221012021211 is 11212021012221.

12221012021211 is a `hidden beast` number, since 122 + 210 + 120 + 2 + 1 + 211 = 666.

It is not a de Polignac number, because 12221012021211 - 2⁷ = 12221012021083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221012023211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34058076 + ... + 34415033.

It is an arithmetic number, because the mean of its divisors is an integer number (840895439540).

Almost surely, 2^{12221012021211} is an apocalyptic number.

12221012021211 is a deficient number, since it is larger than the sum of its proper divisors (7960478527749).

12221012021211 is a wasteful number, since it uses less digits than its factorization.

12221012021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68475955 (or 68475952 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12221012021211 its reverse (11212021012221), we get a palindrome (23433033033432).

The spelling of 12221012021211 in words is "twelve trillion, two hundred twenty-one billion, twelve million, twenty-one thousand, two hundred eleven".