20022110212221 has 48 divisors (see below), whose sum is σ = 31175822513472. Its totient is φ = 12309308985600.

The previous prime is 20022110212189. The next prime is 20022110212267. The reversal of 20022110212221 is 12221201122002.

It is a happy number.

20022110212221 is a `hidden beast` number, since 2 + 0 + 0 + 221 + 10 + 212 + 221 = 666.

It is not a de Polignac number, because 20022110212221 - 2⁵ = 20022110212189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022110212194 and 20022110212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022110212121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 903065466 + ... + 903087636.

It is an arithmetic number, because the mean of its divisors is an integer number (649496302364).

Almost surely, 2^{20022110212221} is an apocalyptic number.

It is an amenable number.

20022110212221 is a deficient number, since it is larger than the sum of its proper divisors (11153712301251).

20022110212221 is a wasteful number, since it uses less digits than its factorization.

20022110212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29354 (or 29351 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20022110212221 its reverse (12221201122002), we get a palindrome (32243311334223).

The spelling of 20022110212221 in words is "twenty trillion, twenty-two billion, one hundred ten million, two hundred twelve thousand, two hundred twenty-one".