20223221121 has 24 divisors (see below), whose sum is σ = 30754439040. Its totient is φ = 12770200800.

The previous prime is 20223221119. The next prime is 20223221129. The reversal of 20223221121 is 12112232202.

20223221121 is a `hidden beast` number, since 202 + 232 + 211 + 21 = 666.

It is not a de Polignac number, because 20223221121 - 2¹ = 20223221119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20223221094 and 20223221103.

It is not an unprimeable number, because it can be changed into a prime (20223221129) 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, 1681951 + ... + 1693931.

It is an arithmetic number, because the mean of its divisors is an integer number (1281434960).

Almost surely, 2^20223221121 is an apocalyptic number.

It is an amenable number.

20223221121 is a deficient number, since it is larger than the sum of its proper divisors (10531217919).

20223221121 is a wasteful number, since it uses less digits than its factorization.

20223221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21877 (or 21874 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20223221121 its reverse (12112232202), we get a palindrome (32335453323).

The spelling of 20223221121 in words is "twenty billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-one".