202021221012 has 48 divisors (see below), whose sum is σ = 537504432192. Its totient is φ = 58503882240.

The previous prime is 202021220983. The next prime is 202021221019. The reversal of 202021221012 is 210122120202.

It is a super-3 number, since 3×202021221012³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202021220982 and 202021221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021221019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38085814 + ... + 38091117.

It is an arithmetic number, because the mean of its divisors is an integer number (11198009004).

Almost surely, 2^202021221012 is an apocalyptic number.

It is an amenable number.

202021221012 is an abundant number, since it is smaller than the sum of its proper divisors (335483211180).

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

202021221012 is a wasteful number, since it uses less digits than its factorization.

202021221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76176968 (or 76176966 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202021221012 its reverse (210122120202), we get a palindrome (412143341214).

The spelling of 202021221012 in words is "two hundred two billion, twenty-one million, two hundred twenty-one thousand, twelve".