20021201343 has 36 divisors (see below), whose sum is σ = 34162078392. Its totient is φ = 11200662720.

The previous prime is 20021201323. The next prime is 20021201357. The reversal of 20021201343 is 34310212002.

20021201343 is a `hidden beast` number, since 200 + 2 + 120 + 1 + 343 = 666.

It is not a de Polignac number, because 20021201343 - 2¹² = 20021197247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021201323) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 581596 + ... + 615057.

It is an arithmetic number, because the mean of its divisors is an integer number (948946622).

Almost surely, 2^20021201343 is an apocalyptic number.

20021201343 is a deficient number, since it is larger than the sum of its proper divisors (14140877049).

20021201343 is a wasteful number, since it uses less digits than its factorization.

20021201343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196696 (or 1196680 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20021201343 its reverse (34310212002), we get a palindrome (54331413345).

The spelling of 20021201343 in words is "twenty billion, twenty-one million, two hundred one thousand, three hundred forty-three".