202120321396 has 24 divisors (see below), whose sum is σ = 404279136576. Its totient is φ = 86614746240.

The previous prime is 202120321391. The next prime is 202120321397. The reversal of 202120321396 is 693123021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120321391) 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, 39685 + ... + 637036.

It is an arithmetic number, because the mean of its divisors is an integer number (16844964024).

Almost surely, 2^202120321396 is an apocalyptic number.

It is an amenable number.

202120321396 is an abundant number, since it is smaller than the sum of its proper divisors (202158815180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202120321396 is a wasteful number, since it uses less digits than its factorization.

202120321396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687399 (or 687397 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 202120321396 its reverse (693123021202), we get a palindrome (895243342598).

The spelling of 202120321396 in words is "two hundred two billion, one hundred twenty million, three hundred twenty-one thousand, three hundred ninety-six".