201020313421 has 8 divisors (see below), whose sum is σ = 212287561920. Its totient is φ = 189963667872.

The previous prime is 201020313419. The next prime is 201020313449. The reversal of 201020313421 is 124313020102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201020313421 - 2¹ = 201020313419 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 (201020313401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52648776 + ... + 52652593.

It is an arithmetic number, because the mean of its divisors is an integer number (26535945240).

Almost surely, 2^201020313421 is an apocalyptic number.

It is an amenable number.

201020313421 is a deficient number, since it is larger than the sum of its proper divisors (11267248499).

201020313421 is a wasteful number, since it uses less digits than its factorization.

201020313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105301475.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201020313421 its reverse (124313020102), we get a palindrome (325333333523).

The spelling of 201020313421 in words is "two hundred one billion, twenty million, three hundred thirteen thousand, four hundred twenty-one".