20122210218 has 24 divisors (see below), whose sum is σ = 44235604224. Its totient is φ = 6097639240.

The previous prime is 20122210217. The next prime is 20122210223. The reversal of 20122210218 is 81201222102.

It is a junction number, because it is equal to n+sod(n) for n = 20122210194 and 20122210203.

It is not an unprimeable number, because it can be changed into a prime (20122210217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13857546 + ... + 13858997.

It is an arithmetic number, because the mean of its divisors is an integer number (1843150176).

Almost surely, 2^20122210218 is an apocalyptic number.

20122210218 is an abundant number, since it is smaller than the sum of its proper divisors (24113394006).

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

20122210218 is a wasteful number, since it uses less digits than its factorization.

20122210218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27716570 (or 27716559 counting only the distinct ones).

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

The spelling of 20122210218 in words is "twenty billion, one hundred twenty-two million, two hundred ten thousand, two hundred eighteen".