2232021221 has 8 divisors (see below), whose sum is σ = 2313418080. Its totient is φ = 2150919792.

The previous prime is 2232021191. The next prime is 2232021241. The reversal of 2232021221 is 1221202322.

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

It is not a de Polignac number, because 2232021221 - 2¹⁸ = 2231759077 is a prime.

It is a super-3 number, since 3×2232021221³ (a number of 29 digits) contains 333 as substring.

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 2232021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2232021241) 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, 58415 + ... + 88748.

It is an arithmetic number, because the mean of its divisors is an integer number (289177260).

Almost surely, 2^2232021221 is an apocalyptic number.

It is an amenable number.

2232021221 is a deficient number, since it is larger than the sum of its proper divisors (81396859).

2232021221 is a wasteful number, since it uses less digits than its factorization.

2232021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147715.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2232021221 is about 47244.2718326783. The cubic root of 2232021221 is about 1306.8711571345.

Adding to 2232021221 its reverse (1221202322), we get a palindrome (3453223543).

The spelling of 2232021221 in words is "two billion, two hundred thirty-two million, twenty-one thousand, two hundred twenty-one".