220121121223232 has 56 divisors (see below), whose sum is σ = 439252901121600. Its totient is φ = 109443252358656.

The previous prime is 220121121223231. The next prime is 220121121223307. The reversal of 220121121223232 is 232322121121022.

It is not an unprimeable number, because it can be changed into a prime (220121121223231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581466269 + ... + 581844707.

Almost surely, 2^{220121121223232} is an apocalyptic number.

It is an amenable number.

220121121223232 is a deficient number, since it is larger than the sum of its proper divisors (219131779898368).

220121121223232 is a wasteful number, since it uses less digits than its factorization.

220121121223232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429403 (or 429393 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 220121121223232 its reverse (232322121121022), we get a palindrome (452443242344254).

The spelling of 220121121223232 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred thirty-two".