20212220020189 has 2 divisors, whose sum is σ = 20212220020190. Its totient is φ = 20212220020188.

The previous prime is 20212220020177. The next prime is 20212220020283. The reversal of 20212220020189 is 98102002221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17818571652025 + 2393648368164 = 4221205^2 + 1547142^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212220020189 - 2⁷ = 20212220020061 is a prime.

It is a super-3 number, since 3×20212220020189³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20212220020189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212220020159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106110010094 + 10106110010095.

It is an arithmetic number, because the mean of its divisors is an integer number (10106110010095).

Almost surely, 2^{20212220020189} is an apocalyptic number.

It is an amenable number.

20212220020189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212220020189 is an equidigital number, since it uses as much as digits as its factorization.

20212220020189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 20212220020189 in words is "twenty trillion, two hundred twelve billion, two hundred twenty million, twenty thousand, one hundred eighty-nine".