202002010101221 has 4 divisors (see below), whose sum is σ = 220365829201344. Its totient is φ = 183638191001100.

The previous prime is 202002010101163. The next prime is 202002010101233. The reversal of 202002010101221 is 122101010200202.

202002010101221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 202002010101221 - 2¹⁰ = 202002010100197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202002010101196 and 202002010101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002010101821) 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, 9181909550045 + ... + 9181909550066.

It is an arithmetic number, because the mean of its divisors is an integer number (55091457300336).

Almost surely, 2^{202002010101221} is an apocalyptic number.

It is an amenable number.

202002010101221 is a deficient number, since it is larger than the sum of its proper divisors (18363819100123).

202002010101221 is a wasteful number, since it uses less digits than its factorization.

202002010101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18363819100122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202002010101221 its reverse (122101010200202), we get a palindrome (324103020301423).

The spelling of 202002010101221 in words is "two hundred two trillion, two billion, ten million, one hundred one thousand, two hundred twenty-one".