20202022120221 has 6 divisors (see below), whose sum is σ = 29180698618110. Its totient is φ = 13468014746808.

The previous prime is 20202022120187. The next prime is 20202022120237. The reversal of 20202022120221 is 12202122020202.

20202022120221 is a `hidden beast` number, since 2 + 0 + 202 + 0 + 221 + 20 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20160001220121 + 42020900100 = 4489989^2 + 204990^2 .

It is not a de Polignac number, because 20202022120221 - 2⁶ = 20202022120157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20202022120194 and 20202022120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202022170221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122334562226 + ... + 1122334562243.

It is an arithmetic number, because the mean of its divisors is an integer number (4863449769685).

Almost surely, 2^{20202022120221} is an apocalyptic number.

It is an amenable number.

20202022120221 is a deficient number, since it is larger than the sum of its proper divisors (8978676497889).

20202022120221 is a wasteful number, since it uses less digits than its factorization.

20202022120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244669124475 (or 2244669124472 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20202022120221 its reverse (12202122020202), we get a palindrome (32404144140423).

The spelling of 20202022120221 in words is "twenty trillion, two hundred two billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".