12211120020 has 48 divisors (see below), whose sum is σ = 37299423168. Its totient is φ = 2960271360.

The previous prime is 12211119967. The next prime is 12211120021. The reversal of 12211120020 is 2002111221.

It is a super-2 number, since 2×12211120020² (a number of 21 digits) contains 22 as substring.

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 = 12211119978 and 12211120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211120021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9250189 + ... + 9251508.

It is an arithmetic number, because the mean of its divisors is an integer number (777071316).

Almost surely, 2^12211120020 is an apocalyptic number.

12211120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211120020 is an abundant number, since it is smaller than the sum of its proper divisors (25088303148).

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

12211120020 is a wasteful number, since it uses less digits than its factorization.

12211120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18501720 (or 18501718 counting only the distinct ones).

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

Adding to 12211120020 its reverse (2002111221), we get a palindrome (14213231241).

It can be divided in two parts, 12211 and 120020, that added together give a palindrome (132231).

The spelling of 12211120020 in words is "twelve billion, two hundred eleven million, one hundred twenty thousand, twenty".