202221021021221 has 8 divisors (see below), whose sum is σ = 202235571855744. Its totient is φ = 202206470653440.

The previous prime is 202221021021209. The next prime is 202221021021301. The reversal of 202221021021221 is 122120120122202.

202221021021221 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 a de Polignac number, because none of the positive numbers 2^k-202221021021221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202221021021193 and 202221021021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221021021421) 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, 1450656101 + ... + 1450795493.

It is an arithmetic number, because the mean of its divisors is an integer number (25279446481968).

Almost surely, 2^{202221021021221} is an apocalyptic number.

It is an amenable number.

202221021021221 is a deficient number, since it is larger than the sum of its proper divisors (14550834523).

202221021021221 is a wasteful number, since it uses less digits than its factorization.

202221021021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233371.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202221021021221 its reverse (122120120122202), we get a palindrome (324341141143423).

The spelling of 202221021021221 in words is "two hundred two trillion, two hundred twenty-one billion, twenty-one million, twenty-one thousand, two hundred twenty-one".