200020120011221 has 2 divisors, whose sum is σ = 200020120011222. Its totient is φ = 200020120011220.

The previous prime is 200020120011209. The next prime is 200020120011281. The reversal of 200020120011221 is 122110021020002.

200020120011221 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., 198958218615025 + 1061901396196 = 14105255^2 + 1030486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200020120011221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200020120011196 and 200020120011205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200020120011281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010060005610 + 100010060005611.

It is an arithmetic number, because the mean of its divisors is an integer number (100010060005611).

Almost surely, 2^{200020120011221} is an apocalyptic number.

It is an amenable number.

200020120011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020120011221 is an equidigital number, since it uses as much as digits as its factorization.

200020120011221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200020120011221 its reverse (122110021020002), we get a palindrome (322130141031223).

The spelling of 200020120011221 in words is "two hundred trillion, twenty billion, one hundred twenty million, eleven thousand, two hundred twenty-one".