1020212221169 has 2 divisors, whose sum is σ = 1020212221170. Its totient is φ = 1020212221168.

The previous prime is 1020212221157. The next prime is 1020212221213. The reversal of 1020212221169 is 9611222120201.

1020212221169 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., 593916835600 + 426295385569 = 770660^2 + 652913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020212221169 is a prime.

It is a super-2 number, since 2×1020212221169² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1020212721169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510106110584 + 510106110585.

It is an arithmetic number, because the mean of its divisors is an integer number (510106110585).

Almost surely, 2^{1020212221169} is an apocalyptic number.

It is an amenable number.

1020212221169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020212221169 is an equidigital number, since it uses as much as digits as its factorization.

1020212221169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 1020212221169 in words is "one trillion, twenty billion, two hundred twelve million, two hundred twenty-one thousand, one hundred sixty-nine".