220213216554787 has 2 divisors, whose sum is σ = 220213216554788. Its totient is φ = 220213216554786.

The previous prime is 220213216554733. The next prime is 220213216554811. The reversal of 220213216554787 is 787455612312022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220213216554787 is a prime.

It is not a weakly prime, because it can be changed into another prime (220213216554887) 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, 110106608277393 + 110106608277394.

It is an arithmetic number, because the mean of its divisors is an integer number (110106608277394).

Almost surely, 2^{220213216554787} is an apocalyptic number.

220213216554787 is a deficient number, since it is larger than the sum of its proper divisors (1).

220213216554787 is an equidigital number, since it uses as much as digits as its factorization.

220213216554787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 220213216554787 in words is "two hundred twenty trillion, two hundred thirteen billion, two hundred sixteen million, five hundred fifty-four thousand, seven hundred eighty-seven".