20202202120 has 16 divisors (see below), whose sum is σ = 45454954860. Its totient is φ = 8080880832.

The previous prime is 20202202091. The next prime is 20202202121. The reversal of 20202202120 is 2120220202.

It can be written as a sum of positive squares in 2 ways, for example, as 20202073956 + 128164 = 142134^2 + 358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20202202120.

It is not an unprimeable number, because it can be changed into a prime (20202202121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252527487 + ... + 252527566.

Almost surely, 2^20202202120 is an apocalyptic number.

20202202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202202120 is an abundant number, since it is smaller than the sum of its proper divisors (25252752740).

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

20202202120 is a wasteful number, since it uses less digits than its factorization.

20202202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505055064 (or 505055060 counting only the distinct ones).

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

Adding to 20202202120 its reverse (2120220202), we get a palindrome (22322422322).

The spelling of 20202202120 in words is "twenty billion, two hundred two million, two hundred two thousand, one hundred twenty".