20211120120 has 32 divisors (see below), whose sum is σ = 60633360720. Its totient is φ = 5389632000.

The previous prime is 20211120113. The next prime is 20211120121. The reversal of 20211120120 is 2102111202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20211120096 and 20211120105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211120121) 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, 84212881 + ... + 84213120.

Almost surely, 2^20211120120 is an apocalyptic number.

20211120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211120120 is an abundant number, since it is smaller than the sum of its proper divisors (40422240600).

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

20211120120 is a wasteful number, since it uses less digits than its factorization.

20211120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168426015 (or 168426011 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20211120120 its reverse (2102111202), we get a palindrome (22313231322).

The spelling of 20211120120 in words is "twenty billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty".