2220000110021 has 4 divisors (see below), whose sum is σ = 2220004677132. Its totient is φ = 2219995542912.

The previous prime is 2220000109979. The next prime is 2220000110023. The reversal of 2220000110021 is 1200110000222.

It is a happy number.

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 1012388130625 + 1207611979396 = 1006175^2 + 1098914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220000110021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2220000109984 and 2220000110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220000110023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1453970 + ... + 2560083.

It is an arithmetic number, because the mean of its divisors is an integer number (555001169283).

Almost surely, 2^{2220000110021} is an apocalyptic number.

It is an amenable number.

2220000110021 is a deficient number, since it is larger than the sum of its proper divisors (4567111).

2220000110021 is an equidigital number, since it uses as much as digits as its factorization.

2220000110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567110.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2220000110021 its reverse (1200110000222), we get a palindrome (3420110110243).

The spelling of 2220000110021 in words is "two trillion, two hundred twenty billion, one hundred ten thousand, twenty-one".