20224204121 has 32 divisors (see below), whose sum is σ = 23304672000. Its totient is φ = 17378932480.

The previous prime is 20224204109. The next prime is 20224204153. The reversal of 20224204121 is 12140242202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20224204121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20224204093 and 20224204102.

It is not an unprimeable number, because it can be changed into a prime (20224204321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10126295 + ... + 10128291.

It is an arithmetic number, because the mean of its divisors is an integer number (728271000).

Almost surely, 2^20224204121 is an apocalyptic number.

It is an amenable number.

20224204121 is a deficient number, since it is larger than the sum of its proper divisors (3080467879).

20224204121 is a wasteful number, since it uses less digits than its factorization.

20224204121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20224204121 its reverse (12140242202), we get a palindrome (32364446323).

The spelling of 20224204121 in words is "twenty billion, two hundred twenty-four million, two hundred four thousand, one hundred twenty-one".