200011322023421 has 4 divisors (see below), whose sum is σ = 201353679889500. Its totient is φ = 198668964157344.

The previous prime is 200011322023367. The next prime is 200011322023451. The reversal of 200011322023421 is 124320223110002.

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 88573508822500 + 111437813200921 = 9411350^2 + 10556411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200011322023421 is a prime.

It is a super-2 number, since 2×200011322023421² (a number of 29 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 (200011322023451) 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, 671178932816 + ... + 671178933113.

It is an arithmetic number, because the mean of its divisors is an integer number (50338419972375).

Almost surely, 2^{200011322023421} is an apocalyptic number.

It is an amenable number.

200011322023421 is a deficient number, since it is larger than the sum of its proper divisors (1342357866079).

200011322023421 is a wasteful number, since it uses less digits than its factorization.

200011322023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342357866078.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 200011322023421 its reverse (124320223110002), we get a palindrome (324331545133423).

The spelling of 200011322023421 in words is "two hundred trillion, eleven billion, three hundred twenty-two million, twenty-three thousand, four hundred twenty-one".