20202121120 has 48 divisors (see below), whose sum is σ = 47829888288. Its totient is φ = 8063514880.

The previous prime is 20202121117. The next prime is 20202121123. The reversal of 20202121120 is 2112120202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20202121117) and next prime (20202121123).

It is a self number, because there is not a number n which added to its sum of digits gives 20202121120.

It is not an unprimeable number, because it can be changed into a prime (20202121123) 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, 60466 + ... + 209905.

It is an arithmetic number, because the mean of its divisors is an integer number (996456006).

Almost surely, 2^20202121120 is an apocalyptic number.

20202121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202121120 is an abundant number, since it is smaller than the sum of its proper divisors (27627767168).

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

20202121120 is a wasteful number, since it uses less digits than its factorization.

20202121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270853 (or 270845 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20202121120 its reverse (2112120202), we get a palindrome (22314241322).

The spelling of 20202121120 in words is "twenty billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty".