20202311331221 has 8 divisors (see below), whose sum is σ = 21137189251200. Its totient is φ = 19272143124432.

The previous prime is 20202311331203. The next prime is 20202311331233. The reversal of 20202311331221 is 12213311320202.

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 20202311331221 - 2²² = 20202307136917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202311333221) 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, 1177419521 + ... + 1177436678.

It is an arithmetic number, because the mean of its divisors is an integer number (2642148656400).

Almost surely, 2^{20202311331221} is an apocalyptic number.

It is an amenable number.

20202311331221 is a deficient number, since it is larger than the sum of its proper divisors (934877919979).

20202311331221 is a wasteful number, since it uses less digits than its factorization.

20202311331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354856595.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20202311331221 its reverse (12213311320202), we get a palindrome (32415622651423).

The spelling of 20202311331221 in words is "twenty trillion, two hundred two billion, three hundred eleven million, three hundred thirty-one thousand, two hundred twenty-one".