20122002220 has 24 divisors (see below), whose sum is σ = 43238908944. Its totient is φ = 7861619136.

The previous prime is 20122002143. The next prime is 20122002239. The reversal of 20122002220 is 2220022102.

It is a self number, because there is not a number n which added to its sum of digits gives 20122002220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11697979 + ... + 11699698.

It is an arithmetic number, because the mean of its divisors is an integer number (1801621206).

Almost surely, 2^20122002220 is an apocalyptic number.

20122002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122002220 is an abundant number, since it is smaller than the sum of its proper divisors (23116906724).

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

20122002220 is a wasteful number, since it uses less digits than its factorization.

20122002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23397729 (or 23397727 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20122002220 its reverse (2220022102), we get a palindrome (22342024322).

The spelling of 20122002220 in words is "twenty billion, one hundred twenty-two million, two thousand, two hundred twenty".