202121412 has 12 divisors (see below), whose sum is σ = 471616656. Its totient is φ = 67373800.

The previous prime is 202121407. The next prime is 202121453. The reversal of 202121412 is 214121202.

202121412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 202121391 and 202121400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8421714 + ... + 8421737.

It is an arithmetic number, because the mean of its divisors is an integer number (39301388).

Almost surely, 2^202121412 is an apocalyptic number.

It is an amenable number.

202121412 is an abundant number, since it is smaller than the sum of its proper divisors (269495244).

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

202121412 is a wasteful number, since it uses less digits than its factorization.

202121412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843458 (or 16843456 counting only the distinct ones).

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

The square root of 202121412 is about 14216.9410211902. The cubic root of 202121412 is about 586.8639618507.

Adding to 202121412 its reverse (214121202), we get a palindrome (416242614).

The spelling of 202121412 in words is "two hundred two million, one hundred twenty-one thousand, four hundred twelve".