20211122110221 has 48 divisors (see below), whose sum is σ = 35461387786240. Its totient is φ = 10835132482080.

The previous prime is 20211122110219. The next prime is 20211122110237. The reversal of 20211122110221 is 12201122111202.

20211122110221 is a `hidden beast` number, since 2 + 0 + 211 + 1 + 221 + 10 + 221 = 666.

It is not a de Polignac number, because 20211122110221 - 2¹ = 20211122110219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211122110194 and 20211122110203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211122110021) 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, 81841825 + ... + 82088406.

Almost surely, 2^{20211122110221} is an apocalyptic number.

20211122110221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20211122110221 is a deficient number, since it is larger than the sum of its proper divisors (15250265676019).

20211122110221 is a wasteful number, since it uses less digits than its factorization.

20211122110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163930366 (or 163930363 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20211122110221 its reverse (12201122111202), we get a palindrome (32412244221423).

The spelling of 20211122110221 in words is "twenty trillion, two hundred eleven billion, one hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".