20122120220 has 48 divisors (see below), whose sum is σ = 43311125088. Its totient is φ = 7848176640.

The previous prime is 20122120217. The next prime is 20122120307. The reversal of 20122120220 is 2202122102.

It is a junction number, because it is equal to n+sod(n) for n = 20122120195 and 20122120204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1746599 + ... + 1758081.

It is an arithmetic number, because the mean of its divisors is an integer number (902315106).

Almost surely, 2^20122120220 is an apocalyptic number.

20122120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122120220 is an abundant number, since it is smaller than the sum of its proper divisors (23189004868).

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

20122120220 is a wasteful number, since it uses less digits than its factorization.

20122120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13670 (or 13668 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20122120220 its reverse (2202122102), we get a palindrome (22324242322).

The spelling of 20122120220 in words is "twenty billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty".