220000111001021 has 16 divisors (see below), whose sum is σ = 237053700576000. Its totient is φ = 202965169525248.

The previous prime is 220000111000993. The next prime is 220000111001081. The reversal of 220000111001021 is 120100111000022.

It is not a de Polignac number, because 220000111001021 - 2¹⁴ = 220000110984637 is a prime.

It is a super-2 number, since 2×220000111001021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220000111000993 and 220000111001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000111001081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1960746680 + ... + 1960858878.

It is an arithmetic number, because the mean of its divisors is an integer number (14815856286000).

Almost surely, 2^{220000111001021} is an apocalyptic number.

It is an amenable number.

220000111001021 is a deficient number, since it is larger than the sum of its proper divisors (17053589574979).

220000111001021 is a wasteful number, since it uses less digits than its factorization.

220000111001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193948.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 220000111001021 its reverse (120100111000022), we get a palindrome (340100222001043).

Subtracting from 220000111001021 its reverse (120100111000022), we obtain a palindrome (99900000000999).

The spelling of 220000111001021 in words is "two hundred twenty trillion, one hundred eleven million, one thousand, twenty-one".