1212210022211 has 2 divisors, whose sum is σ = 1212210022212. Its totient is φ = 1212210022210.

The previous prime is 1212210022201. The next prime is 1212210022229. The reversal of 1212210022211 is 1122200122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212210022211 - 2¹⁸ = 1212209760067 is a prime.

It is a super-2 number, since 2×1212210022211² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212210022211.

It is not a weakly prime, because it can be changed into another prime (1212210022201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105011105 + 606105011106.

It is an arithmetic number, because the mean of its divisors is an integer number (606105011106).

Almost surely, 2^{1212210022211} is an apocalyptic number.

1212210022211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212210022211 is an equidigital number, since it uses as much as digits as its factorization.

1212210022211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1212210022211 its reverse (1122200122121), we get a palindrome (2334410144332).

The spelling of 1212210022211 in words is "one trillion, two hundred twelve billion, two hundred ten million, twenty-two thousand, two hundred eleven".