202012221 has 8 divisors (see below), whose sum is σ = 272016864. Its totient is φ = 133341200.

The previous prime is 202012211. The next prime is 202012229. The reversal of 202012221 is 122210202.

202012221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202012221 - 2⁵ = 202012189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202012197 and 202012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012229) 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, 333051 + ... + 333656.

It is an arithmetic number, because the mean of its divisors is an integer number (34002108).

Almost surely, 2^202012221 is an apocalyptic number.

It is an amenable number.

202012221 is a deficient number, since it is larger than the sum of its proper divisors (70004643).

202012221 is a wasteful number, since it uses less digits than its factorization.

202012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666811.

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

The square root of 202012221 is about 14213.1003303291. The cubic root of 202012221 is about 586.7582633253.

Adding to 202012221 its reverse (122210202), we get a palindrome (324222423).

It can be divided in two parts, 20201 and 2221, that added together give a palindrome (22422).

The spelling of 202012221 in words is "two hundred two million, twelve thousand, two hundred twenty-one".