220231012130021 has 8 divisors (see below), whose sum is σ = 233186004463320. Its totient is φ = 207276045009408.

The previous prime is 220231012130009. The next prime is 220231012130047. The reversal of 220231012130021 is 120031210132022.

220231012130021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26457958312900 + 193773053817121 = 5143730^2 + 13920239^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220231012130021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220231012129975 and 220231012130002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220231012130071) 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, 13449035 + ... + 24926663.

It is an arithmetic number, because the mean of its divisors is an integer number (29148250557915).

Almost surely, 2^{220231012130021} is an apocalyptic number.

It is an amenable number.

220231012130021 is a deficient number, since it is larger than the sum of its proper divisors (12954992333299).

220231012130021 is a wasteful number, since it uses less digits than its factorization.

220231012130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606343.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 220231012130021 its reverse (120031210132022), we get a palindrome (340262222262043).

The spelling of 220231012130021 in words is "two hundred twenty trillion, two hundred thirty-one billion, twelve million, one hundred thirty thousand, twenty-one".