12101000220 has 144 divisors (see below), whose sum is σ = 38052993888. Its totient is φ = 3110192640.

The previous prime is 12101000207. The next prime is 12101000221. The reversal of 12101000220 is 2200010121.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101000221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 704130 + ... + 721110.

It is an arithmetic number, because the mean of its divisors is an integer number (264256902).

Almost surely, 2^12101000220 is an apocalyptic number.

12101000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12101000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19026496944).

12101000220 is an abundant number, since it is smaller than the sum of its proper divisors (25951993668).

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

12101000220 is a wasteful number, since it uses less digits than its factorization.

12101000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17140 (or 17135 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12101000220 its reverse (2200010121), we get a palindrome (14301010341).

Subtracting from 12101000220 its reverse (2200010121), we obtain a palindrome (9900990099).

The spelling of 12101000220 in words is "twelve billion, one hundred one million, two hundred twenty", and thus it is an aban number.