20122211212087 has 2 divisors, whose sum is σ = 20122211212088. Its totient is φ = 20122211212086.

The previous prime is 20122211212043. The next prime is 20122211212121. The reversal of 20122211212087 is 78021211222102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20122211212087 - 2⁷ = 20122211211959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122211213087) 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, 10061105606043 + 10061105606044.

It is an arithmetic number, because the mean of its divisors is an integer number (10061105606044).

Almost surely, 2^{20122211212087} is an apocalyptic number.

20122211212087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122211212087 is an equidigital number, since it uses as much as digits as its factorization.

20122211212087 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.

Adding to 20122211212087 its reverse (78021211222102), we get a palindrome (98143422434189).

The spelling of 20122211212087 in words is "twenty trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twelve thousand, eighty-seven".