2220021111001 has 4 divisors (see below), whose sum is σ = 2231523811252. Its totient is φ = 2208518410752.

The previous prime is 2220021110917. The next prime is 2220021111059. The reversal of 2220021111001 is 1001111200222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 791281411600 + 1428739699401 = 889540^2 + 1195299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220021111001 is a prime.

It is a super-2 number, since 2×2220021111001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220021111701) 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 3 ways as a sum of consecutive naturals, for example, 5751349836 + ... + 5751350221.

It is an arithmetic number, because the mean of its divisors is an integer number (557880952813).

Almost surely, 2^{2220021111001} is an apocalyptic number.

It is an amenable number.

2220021111001 is a deficient number, since it is larger than the sum of its proper divisors (11502700251).

2220021111001 is a wasteful number, since it uses less digits than its factorization.

2220021111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11502700250.

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

Adding to 2220021111001 its reverse (1001111200222), we get a palindrome (3221132311223).

The spelling of 2220021111001 in words is "two trillion, two hundred twenty billion, twenty-one million, one hundred eleven thousand, one".