220210232121 has 56 divisors (see below), whose sum is σ = 360893560320. Its totient is φ = 133196076000.

The previous prime is 220210232117. The next prime is 220210232159. The reversal of 220210232121 is 121232012022.

220210232121 is a `hidden beast` number, since 220 + 2 + 102 + 321 + 21 = 666.

It is not a de Polignac number, because 220210232121 - 2² = 220210232117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220210232094 and 220210232103.

It is not an unprimeable number, because it can be changed into a prime (220210232101) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4054696 + ... + 4108646.

Almost surely, 2^220210232121 is an apocalyptic number.

It is an amenable number.

220210232121 is a deficient number, since it is larger than the sum of its proper divisors (140683328199).

220210232121 is an equidigital number, since it uses as much as digits as its factorization.

220210232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54489 (or 54474 counting only the distinct ones).

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

Adding to 220210232121 its reverse (121232012022), we get a palindrome (341442244143).

The spelling of 220210232121 in words is "two hundred twenty billion, two hundred ten million, two hundred thirty-two thousand, one hundred twenty-one".