200122220202021 has 12 divisors (see below), whose sum is σ = 311301231425548. Its totient is φ = 123152135508864.

The previous prime is 200122220201899. The next prime is 200122220202133. The reversal of 200122220202021 is 120202022221002.

200122220202021 is a `hidden beast` number, since 200 + 1 + 22 + 220 + 20 + 202 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54470510811396 + 145651709390625 = 7380414^2 + 12068625^2 .

It is not a de Polignac number, because 200122220202021 - 2²¹ = 200122218104869 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200122220201985 and 200122220202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200122220222021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 855223163140 + ... + 855223163373.

Almost surely, 2^{200122220202021} is an apocalyptic number.

It is an amenable number.

200122220202021 is a deficient number, since it is larger than the sum of its proper divisors (111179011223527).

200122220202021 is a wasteful number, since it uses less digits than its factorization.

200122220202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710446326532 (or 1710446326529 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 200122220202021 its reverse (120202022221002), we get a palindrome (320324242423023).

The spelling of 200122220202021 in words is "two hundred trillion, one hundred twenty-two billion, two hundred twenty million, two hundred two thousand, twenty-one".