2210211220021 has 12 divisors (see below), whose sum is σ = 2614639357440. Its totient is φ = 1862357151480.

The previous prime is 2210211219973. The next prime is 2210211220039. The reversal of 2210211220021 is 1200221120122.

It is a happy number.

It is not a de Polignac number, because 2210211220021 - 2⁷ = 2210211219893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2210211219977 and 2210211220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210211223021) 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 11 ways as a sum of consecutive naturals, for example, 382254325 + ... + 382260106.

It is an arithmetic number, because the mean of its divisors is an integer number (217886613120).

Almost surely, 2^{2210211220021} is an apocalyptic number.

It is an amenable number.

2210211220021 is a deficient number, since it is larger than the sum of its proper divisors (404428137419).

2210211220021 is an equidigital number, since it uses as much as digits as its factorization.

2210211220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764514504 (or 764514497 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2210211220021 its reverse (1200221120122), we get a palindrome (3410432340143).

The spelling of 2210211220021 in words is "two trillion, two hundred ten billion, two hundred eleven million, two hundred twenty thousand, twenty-one".