20211120020 has 48 divisors (see below), whose sum is σ = 52237976448. Its totient is φ = 6396485760.

The previous prime is 20211119993. The next prime is 20211120043. The reversal of 20211120020 is 2002111202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20211119983 and 20211120010.

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, 5550686 + ... + 5554325.

It is an arithmetic number, because the mean of its divisors is an integer number (1088291176).

Almost surely, 2^20211120020 is an apocalyptic number.

20211120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211120020 is an abundant number, since it is smaller than the sum of its proper divisors (32026856428).

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

20211120020 is a wasteful number, since it uses less digits than its factorization.

20211120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105040 (or 11105038 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20211120020 its reverse (2002111202), we get a palindrome (22213231222).

It can be divided in two parts, 20 and 211120020, that multiplied together give a square (4222400400 = 64980²).

The spelling of 20211120020 in words is "twenty billion, two hundred eleven million, one hundred twenty thousand, twenty".