2221235133221 has 16 divisors (see below), whose sum is σ = 2409863391600. Its totient is φ = 2035148364288.

The previous prime is 2221235133199. The next prime is 2221235133253. The reversal of 2221235133221 is 1223315321222.

It is a happy number.

2221235133221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 23680900996 + 2197554232225 = 153886^2 + 1482415^2 .

It is not a de Polignac number, because 2221235133221 - 2¹⁸ = 2221234871077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221235123221) 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, 14866475 + ... + 15015143.

It is an arithmetic number, because the mean of its divisors is an integer number (150616461975).

Almost surely, 2^{2221235133221} is an apocalyptic number.

It is an amenable number.

2221235133221 is a deficient number, since it is larger than the sum of its proper divisors (188628258379).

2221235133221 is a wasteful number, since it uses less digits than its factorization.

2221235133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157208.

The product of its digits is 8640, while the sum is 29.

The spelling of 2221235133221 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-five million, one hundred thirty-three thousand, two hundred twenty-one".