200897052421 has 4 divisors (see below), whose sum is σ = 216350671852. Its totient is φ = 185443432992.

The previous prime is 200897052403. The next prime is 200897052467. The reversal of 200897052421 is 124250798002.

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 22569052900 + 178327999521 = 150230^2 + 422289^2 .

It is a cyclic number.

It is not a de Polignac number, because 200897052421 - 2²⁷ = 200762834693 is a prime.

It is a super-2 number, since 2×200897052421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200897052221) 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, 7726809696 + ... + 7726809721.

It is an arithmetic number, because the mean of its divisors is an integer number (54087667963).

Almost surely, 2^200897052421 is an apocalyptic number.

It is an amenable number.

200897052421 is a deficient number, since it is larger than the sum of its proper divisors (15453619431).

200897052421 is a wasteful number, since it uses less digits than its factorization.

200897052421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15453619430.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 200897052421 in words is "two hundred billion, eight hundred ninety-seven million, fifty-two thousand, four hundred twenty-one".