2122021218 has 16 divisors (see below), whose sum is σ = 4283707680. Its totient is φ = 700729536.

The previous prime is 2122021217. The next prime is 2122021219. The reversal of 2122021218 is 8121202212.

It is an interprime number because it is at equal distance from previous prime (2122021217) and next prime (2122021219).

It is a junction number, because it is equal to n+sod(n) for n = 2122021194 and 2122021203.

It is not an unprimeable number, because it can be changed into a prime (2122021217) 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, 1652023 + ... + 1653306.

It is an arithmetic number, because the mean of its divisors is an integer number (267731730).

Almost surely, 2^2122021218 is an apocalyptic number.

2122021218 is an abundant number, since it is smaller than the sum of its proper divisors (2161686462).

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

2122021218 is a wasteful number, since it uses less digits than its factorization.

2122021218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305441.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2122021218 is about 46065.4015286961. The cubic root of 2122021218 is about 1285.0397859968.

The spelling of 2122021218 in words is "two billion, one hundred twenty-two million, twenty-one thousand, two hundred eighteen".