2231221302 has 20 divisors (see below), whose sum is σ = 4999588836. Its totient is φ = 743740380.

The previous prime is 2231221277. The next prime is 2231221303. The reversal of 2231221302 is 2031221322.

It is a super-3 number, since 3×2231221302³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231221303) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6886324 + ... + 6886647.

Almost surely, 2^2231221302 is an apocalyptic number.

2231221302 is an abundant number, since it is smaller than the sum of its proper divisors (2768367534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231221302 is a wasteful number, since it uses less digits than its factorization.

2231221302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13772985 (or 13772976 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2231221302 is about 47235.8052964062. The cubic root of 2231221302 is about 1306.7150182401.

Adding to 2231221302 its reverse (2031221322), we get a palindrome (4262442624).

The spelling of 2231221302 in words is "two billion, two hundred thirty-one million, two hundred twenty-one thousand, three hundred two".