12211012000021 has 2 divisors, whose sum is σ = 12211012000022. Its totient is φ = 12211012000020.

The previous prime is 12211012000001. The next prime is 12211012000049. The reversal of 12211012000021 is 12000021011221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8521500943921 + 3689511056100 = 2919161^2 + 1920810^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211012000021 - 2¹¹ = 12211011997973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12211011999965 and 12211012000010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211012000001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105506000010 + 6105506000011.

It is an arithmetic number, because the mean of its divisors is an integer number (6105506000011).

Almost surely, 2^{12211012000021} is an apocalyptic number.

It is an amenable number.

12211012000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211012000021 is an equidigital number, since it uses as much as digits as its factorization.

12211012000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12211012000021 its reverse (12000021011221), we get a palindrome (24211033011242).

The spelling of 12211012000021 in words is "twelve trillion, two hundred eleven billion, twelve million, twenty-one", and thus it is an aban number.