220101112021 has 12 divisors (see below), whose sum is σ = 257163912288. Its totient is φ = 187826993592.

The previous prime is 220101112003. The next prime is 220101112037. The reversal of 220101112021 is 120211101022.

It is not a de Polignac number, because 220101112021 - 2⁹ = 220101111509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220101111992 and 220101112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220101112081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9882841 + ... + 9905086.

It is an arithmetic number, because the mean of its divisors is an integer number (21430326024).

Almost surely, 2^220101112021 is an apocalyptic number.

It is an amenable number.

220101112021 is a deficient number, since it is larger than the sum of its proper divisors (37062800267).

220101112021 is a wasteful number, since it uses less digits than its factorization.

220101112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19788168 (or 19788161 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220101112021 its reverse (120211101022), we get a palindrome (340312213043).

The spelling of 220101112021 in words is "two hundred twenty billion, one hundred one million, one hundred twelve thousand, twenty-one".