2221133531221 has 8 divisors (see below), whose sum is σ = 2423067645600. Its totient is φ = 2019201564240.

The previous prime is 2221133531213. The next prime is 2221133531263. The reversal of 2221133531221 is 1221353311222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221133531221 - 2³ = 2221133531213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221133531221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221133531021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2258910 + ... + 3089488.

It is an arithmetic number, because the mean of its divisors is an integer number (302883455700).

Almost surely, 2^{2221133531221} is an apocalyptic number.

It is an amenable number.

2221133531221 is a deficient number, since it is larger than the sum of its proper divisors (201934114379).

2221133531221 is a wasteful number, since it uses less digits than its factorization.

2221133531221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073699.

The product of its digits is 4320, while the sum is 28.

Adding to 2221133531221 its reverse (1221353311222), we get a palindrome (3442486842443).

The spelling of 2221133531221 in words is "two trillion, two hundred twenty-one billion, one hundred thirty-three million, five hundred thirty-one thousand, two hundred twenty-one".