2223121302 has 80 divisors (see below), whose sum is σ = 5094481392. Its totient is φ = 724420800.

The previous prime is 2223121279. The next prime is 2223121333. The reversal of 2223121302 is 2031213222.

2223121302 is a `hidden beast` number, since 222 + 312 + 130 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1357228 + ... + 1358864.

Almost surely, 2^2223121302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2223121302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2547240696).

2223121302 is an abundant number, since it is smaller than the sum of its proper divisors (2871360090).

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

2223121302 is a wasteful number, since it uses less digits than its factorization.

2223121302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1826 counting only the distinct ones).

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

The square root of 2223121302 is about 47149.9872958626. The cubic root of 2223121302 is about 1305.1318455772.

Adding to 2223121302 its reverse (2031213222), we get a palindrome (4254334524).

The spelling of 2223121302 in words is "two billion, two hundred twenty-three million, one hundred twenty-one thousand, three hundred two".