12021001211 has 2 divisors, whose sum is σ = 12021001212. Its totient is φ = 12021001210.

The previous prime is 12021001199. The next prime is 12021001217. The reversal of 12021001211 is 11210012021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12021001211 - 2¹⁴ = 12020984827 is a prime.

It is a super-2 number, since 2×12021001211² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12021001192 and 12021001201.

It is not a weakly prime, because it can be changed into another prime (12021001217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010500605 + 6010500606.

It is an arithmetic number, because the mean of its divisors is an integer number (6010500606).

Almost surely, 2^12021001211 is an apocalyptic number.

12021001211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021001211 is an equidigital number, since it uses as much as digits as its factorization.

12021001211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12021001211 its reverse (11210012021), we get a palindrome (23231013232).

The spelling of 12021001211 in words is "twelve billion, twenty-one million, one thousand, two hundred eleven".