1020221219959 has 2 divisors, whose sum is σ = 1020221219960. Its totient is φ = 1020221219958.

The previous prime is 1020221219957. The next prime is 1020221220143. The reversal of 1020221219959 is 9599121220201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020221219959 - 2¹ = 1020221219957 is a prime.

Together with 1020221219957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020221219957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510110609979 + 510110609980.

It is an arithmetic number, because the mean of its divisors is an integer number (510110609980).

Almost surely, 2^{1020221219959} is an apocalyptic number.

1020221219959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020221219959 is an equidigital number, since it uses as much as digits as its factorization.

1020221219959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 1020221219959 in words is "one trillion, twenty billion, two hundred twenty-one million, two hundred nineteen thousand, nine hundred fifty-nine".