220000022121021 has 8 divisors (see below), whose sum is σ = 293483867383200. Its totient is φ = 146591429136432.

The previous prime is 220000022121017. The next prime is 220000022121037. The reversal of 220000022121021 is 120121220000022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220000022121021 - 2² = 220000022121017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000022121071) 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, 18813062575 + ... + 18813074268.

It is an arithmetic number, because the mean of its divisors is an integer number (36685483422900).

Almost surely, 2^{220000022121021} is an apocalyptic number.

It is an amenable number.

220000022121021 is a deficient number, since it is larger than the sum of its proper divisors (73483845262179).

220000022121021 is a wasteful number, since it uses less digits than its factorization.

220000022121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37626138795.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220000022121021 its reverse (120121220000022), we get a palindrome (340121242121043).

The spelling of 220000022121021 in words is "two hundred twenty trillion, twenty-two million, one hundred twenty-one thousand, twenty-one".