2021222270189 has 2 divisors, whose sum is σ = 2021222270190. Its totient is φ = 2021222270188.

The previous prime is 2021222270173. The next prime is 2021222270233. The reversal of 2021222270189 is 9810722221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1472351694025 + 548870576164 = 1213405^2 + 740858^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021222270189 - 2⁴ = 2021222270173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021222270149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010611135094 + 1010611135095.

It is an arithmetic number, because the mean of its divisors is an integer number (1010611135095).

Almost surely, 2^{2021222270189} is an apocalyptic number.

It is an amenable number.

2021222270189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021222270189 is an equidigital number, since it uses as much as digits as its factorization.

2021222270189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 2021222270189 in words is "two trillion, twenty-one billion, two hundred twenty-two million, two hundred seventy thousand, one hundred eighty-nine".