220021012069 has 2 divisors, whose sum is σ = 220021012070. Its totient is φ = 220021012068.

The previous prime is 220021012051. The next prime is 220021012201. The reversal of 220021012069 is 960210120022.

220021012069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207361836900 + 12659175169 = 455370^2 + 112513^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021012069 - 2⁷ = 220021011941 is a prime.

It is a super-2 number, since 2×220021012069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220021012009) 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, 110010506034 + 110010506035.

It is an arithmetic number, because the mean of its divisors is an integer number (110010506035).

Almost surely, 2^220021012069 is an apocalyptic number.

It is an amenable number.

220021012069 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021012069 is an equidigital number, since it uses as much as digits as its factorization.

220021012069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 220021012069 in words is "two hundred twenty billion, twenty-one million, twelve thousand, sixty-nine".