220020210010021 has 32 divisors (see below), whose sum is σ = 251297102016000. Its totient is φ = 191647104026112.

The previous prime is 220020210009989. The next prime is 220020210010037. The reversal of 220020210010021 is 120010012020022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220020210010021 - 2⁵ = 220020210009989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220020210009983 and 220020210010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020210010091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113852256 + ... + 115768633.

It is an arithmetic number, because the mean of its divisors is an integer number (7853034438000).

Almost surely, 2^{220020210010021} is an apocalyptic number.

It is an amenable number.

220020210010021 is a deficient number, since it is larger than the sum of its proper divisors (31276892005979).

220020210010021 is a wasteful number, since it uses less digits than its factorization.

220020210010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229621021.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220020210010021 its reverse (120010012020022), we get a palindrome (340030222030043).

The spelling of 220020210010021 in words is "two hundred twenty trillion, twenty billion, two hundred ten million, ten thousand, twenty-one".