202021212 has 12 divisors (see below), whose sum is σ = 471382856. Its totient is φ = 67340400.

The previous prime is 202021207. The next prime is 202021219. The reversal of 202021212 is 212120202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 16835101 = 202021212 / (2 + 0 + 2 + 0 + 2 + 1 + 2 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021219) 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, 8417539 + ... + 8417562.

Almost surely, 2^202021212 is an apocalyptic number.

It is an amenable number.

202021212 is an abundant number, since it is smaller than the sum of its proper divisors (269361644).

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

202021212 is a wasteful number, since it uses less digits than its factorization.

202021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835108 (or 16835106 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 202021212 is about 14213.4166195183. The cubic root of 202021212 is about 586.7669681869.

Adding to 202021212 its reverse (212120202), we get a palindrome (414141414).

It can be divided in two parts, 2020 and 21212, that added together give a palindrome (23232).

The spelling of 202021212 in words is "two hundred two million, twenty-one thousand, two hundred twelve".