220212111021 has 16 divisors (see below), whose sum is σ = 335961292800. Its totient is φ = 125685499248.

The previous prime is 220212110981. The next prime is 220212111061. The reversal of 220212111021 is 120111212022.

220212111021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220212110981) and next prime (220212111061).

It is not a de Polignac number, because 220212111021 - 2⁷ = 220212110893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212111061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6231661 + ... + 6266898.

It is an arithmetic number, because the mean of its divisors is an integer number (20997580800).

Almost surely, 2^220212111021 is an apocalyptic number.

220212111021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220212111021 is a deficient number, since it is larger than the sum of its proper divisors (115749181779).

220212111021 is a wasteful number, since it uses less digits than its factorization.

220212111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12499408.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220212111021 its reverse (120111212022), we get a palindrome (340323323043).

The spelling of 220212111021 in words is "two hundred twenty billion, two hundred twelve million, one hundred eleven thousand, twenty-one".