2211021211021 has 16 divisors (see below), whose sum is σ = 2568675058560. Its totient is φ = 1863824719680.

The previous prime is 2211021210989. The next prime is 2211021211027. The reversal of 2211021211021 is 1201121201122.

It is not a de Polignac number, because 2211021211021 - 2⁵ = 2211021210989 is a prime.

It is a super-2 number, since 2×2211021211021² (a number of 25 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 = 2211021210986 and 2211021211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211021211027) 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, 2628255 + ... + 3365971.

It is an arithmetic number, because the mean of its divisors is an integer number (160542191160).

Almost surely, 2^{2211021211021} is an apocalyptic number.

It is an amenable number.

2211021211021 is a deficient number, since it is larger than the sum of its proper divisors (357653847539).

2211021211021 is an equidigital number, since it uses as much as digits as its factorization.

2211021211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744804.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2211021211021 its reverse (1201121201122), we get a palindrome (3412142412143).

The spelling of 2211021211021 in words is "two trillion, two hundred eleven billion, twenty-one million, two hundred eleven thousand, twenty-one".