1222021211287 has 2 divisors, whose sum is σ = 1222021211288. Its totient is φ = 1222021211286.

The previous prime is 1222021211171. The next prime is 1222021211351. The reversal of 1222021211287 is 7821121202221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222021211287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222021212287) 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, 611010605643 + 611010605644.

It is an arithmetic number, because the mean of its divisors is an integer number (611010605644).

Almost surely, 2^{1222021211287} is an apocalyptic number.

1222021211287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222021211287 is an equidigital number, since it uses as much as digits as its factorization.

1222021211287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 31.

The spelling of 1222021211287 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two hundred eleven thousand, two hundred eighty-seven".