200121505533 has 6 divisors (see below), whose sum is σ = 289064396894. Its totient is φ = 133414337016.

The previous prime is 200121505487. The next prime is 200121505579. The reversal of 200121505533 is 335505121002.

It is a happy number.

200121505533 is a `hidden beast` number, since 2 + 0 + 0 + 121 + 5 + 0 + 5 + 533 = 666.

It is an interprime number because it is at equal distance from previous prime (200121505487) and next prime (200121505579).

It can be written as a sum of positive squares in only one way, i.e., 136335962169 + 63785543364 = 369237^2 + 252558^2 .

It is not a de Polignac number, because 200121505533 - 2²⁰ = 200120456957 is a prime.

It is a super-2 number, since 2×200121505533² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121505497 and 200121505506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121525533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11117861410 + ... + 11117861427.

Almost surely, 2^200121505533 is an apocalyptic number.

It is an amenable number.

200121505533 is a deficient number, since it is larger than the sum of its proper divisors (88942891361).

200121505533 is a wasteful number, since it uses less digits than its factorization.

200121505533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22235722843 (or 22235722840 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 200121505533 its reverse (335505121002), we get a palindrome (535626626535).

The spelling of 200121505533 in words is "two hundred billion, one hundred twenty-one million, five hundred five thousand, five hundred thirty-three".