12211102102021 has 2 divisors, whose sum is σ = 12211102102022. Its totient is φ = 12211102102020.

The previous prime is 12211102102009. The next prime is 12211102102039. The reversal of 12211102102021 is 12020120111221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7696263317796 + 4514838784225 = 2774214^2 + 2124815^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211102102021 - 2³¹ = 12208954618373 is a prime.

It is a super-2 number, since 2×12211102102021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211102101986 and 12211102102004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211102142021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105551051010 + 6105551051011.

It is an arithmetic number, because the mean of its divisors is an integer number (6105551051011).

Almost surely, 2^{12211102102021} is an apocalyptic number.

It is an amenable number.

12211102102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211102102021 is an equidigital number, since it uses as much as digits as its factorization.

12211102102021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12211102102021 its reverse (12020120111221), we get a palindrome (24231222213242).

The spelling of 12211102102021 in words is "twelve trillion, two hundred eleven billion, one hundred two million, one hundred two thousand, twenty-one".