200222112220021 has 2 divisors, whose sum is σ = 200222112220022. Its totient is φ = 200222112220020.

The previous prime is 200222112219979. The next prime is 200222112220027. The reversal of 200222112220021 is 120022211222002.

200222112220021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157998615062500 + 42223497157521 = 12569750^2 + 6497961^2 .

It is a cyclic number.

It is not a de Polignac number, because 200222112220021 - 2⁷ = 200222112219893 is a prime.

It is a super-2 number, since 2×200222112220021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200222112220027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100111056110010 + 100111056110011.

It is an arithmetic number, because the mean of its divisors is an integer number (100111056110011).

Almost surely, 2^{200222112220021} is an apocalyptic number.

It is an amenable number.

200222112220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200222112220021 is an equidigital number, since it uses as much as digits as its factorization.

200222112220021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 200222112220021 its reverse (120022211222002), we get a palindrome (320244323442023).

The spelling of 200222112220021 in words is "two hundred trillion, two hundred twenty-two billion, one hundred twelve million, two hundred twenty thousand, twenty-one".