200361020021 has 4 divisors (see below), whose sum is σ = 201074048844. Its totient is φ = 199647991200.

The previous prime is 200361020003. The next prime is 200361020023. The reversal of 200361020021 is 120020163002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123559983121 + 76801036900 = 351511^2 + 277130^2 .

It is a cyclic number.

It is not a de Polignac number, because 200361020021 - 2²² = 200356825717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200361020023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356513990 + ... + 356514551.

It is an arithmetic number, because the mean of its divisors is an integer number (50268512211).

Almost surely, 2^200361020021 is an apocalyptic number.

It is an amenable number.

200361020021 is a deficient number, since it is larger than the sum of its proper divisors (713028823).

200361020021 is an equidigital number, since it uses as much as digits as its factorization.

200361020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713028822.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 200361020021 its reverse (120020163002), we get a palindrome (320381183023).

The spelling of 200361020021 in words is "two hundred billion, three hundred sixty-one million, twenty thousand, twenty-one".