220012112011021 has 4 divisors (see below), whose sum is σ = 240013213102944. Its totient is φ = 200011010919100.

The previous prime is 220012112010979. The next prime is 220012112011051. The reversal of 220012112011021 is 120110211210022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220012112011021 - 2⁷ = 220012112010893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220012112010986 and 220012112011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012112011051) 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 3 ways as a sum of consecutive naturals, for example, 10000550545945 + ... + 10000550545966.

It is an arithmetic number, because the mean of its divisors is an integer number (60003303275736).

Almost surely, 2^{220012112011021} is an apocalyptic number.

It is an amenable number.

220012112011021 is a deficient number, since it is larger than the sum of its proper divisors (20001101091923).

220012112011021 is a wasteful number, since it uses less digits than its factorization.

220012112011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001101091922.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220012112011021 its reverse (120110211210022), we get a palindrome (340122323221043).

The spelling of 220012112011021 in words is "two hundred twenty trillion, twelve billion, one hundred twelve million, eleven thousand, twenty-one".