2202121218 has 16 divisors (see below), whose sum is σ = 4804628256. Its totient is φ = 667309440.

The previous prime is 2202121211. The next prime is 2202121241. The reversal of 2202121218 is 8121212022.

It is a junction number, because it is equal to n+sod(n) for n = 2202121194 and 2202121203.

It is not an unprimeable number, because it can be changed into a prime (2202121211) 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, 16682671 + ... + 16682802.

It is an arithmetic number, because the mean of its divisors is an integer number (300289266).

Almost surely, 2^2202121218 is an apocalyptic number.

2202121218 is an abundant number, since it is smaller than the sum of its proper divisors (2602507038).

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

2202121218 is a wasteful number, since it uses less digits than its factorization.

2202121218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33365489.

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

The square root of 2202121218 is about 46926.7644100890. The cubic root of 2202121218 is about 1301.0093183334.

The spelling of 2202121218 in words is "two billion, two hundred two million, one hundred twenty-one thousand, two hundred eighteen".