20102222020221 has 24 divisors (see below), whose sum is σ = 31676757428160. Its totient is φ = 12182961480000.

The previous prime is 20102222020213. The next prime is 20102222020271. The reversal of 20102222020221 is 12202022220102.

20102222020221 is a `hidden beast` number, since 20 + 1 + 0 + 222 + 202 + 0 + 221 = 666.

It is not a de Polignac number, because 20102222020221 - 2³ = 20102222020213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20102222020194 and 20102222020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102222020201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4374760 + ... + 7703438.

It is an arithmetic number, because the mean of its divisors is an integer number (1319864892840).

Almost surely, 2^{20102222020221} is an apocalyptic number.

It is an amenable number.

20102222020221 is a deficient number, since it is larger than the sum of its proper divisors (11574535407939).

20102222020221 is a wasteful number, since it uses less digits than its factorization.

20102222020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389697 (or 3389694 counting only the distinct ones).

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

Adding to 20102222020221 its reverse (12202022220102), we get a palindrome (32304244240323).

The spelling of 20102222020221 in words is "twenty trillion, one hundred two billion, two hundred twenty-two million, twenty thousand, two hundred twenty-one".