2223821218 has 16 divisors (see below), whose sum is σ = 3519469440. Its totient is φ = 1050937200.

The previous prime is 2223821209. The next prime is 2223821227. The reversal of 2223821218 is 8121283222.

It is an interprime number because it is at equal distance from previous prime (2223821209) and next prime (2223821227).

It is a self number, because there is not a number n which added to its sum of digits gives 2223821218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51513 + ... + 84268.

It is an arithmetic number, because the mean of its divisors is an integer number (219966840).

Almost surely, 2^2223821218 is an apocalyptic number.

2223821218 is a deficient number, since it is larger than the sum of its proper divisors (1295648222).

2223821218 is a wasteful number, since it uses less digits than its factorization.

2223821218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136233.

The product of its digits is 6144, while the sum is 31.

The square root of 2223821218 is about 47157.4089406956. The cubic root of 2223821218 is about 1305.2687981899.

The spelling of 2223821218 in words is "two billion, two hundred twenty-three million, eight hundred twenty-one thousand, two hundred eighteen".