12101132111220 has 288 divisors, whose sum is σ = 39437036061696. Its totient is φ = 2992808448000.

The previous prime is 12101132111179. The next prime is 12101132111231. The reversal of 12101132111220 is 2211123110121.

It is a happy number.

12101132111220 is a `hidden beast` number, since 1 + 210 + 1 + 1 + 321 + 112 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12101132111193 and 12101132111202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 65118877 + ... + 65304443.

It is an arithmetic number, because the mean of its divisors is an integer number (136934152992).

Almost surely, 2^{12101132111220} is an apocalyptic number.

12101132111220 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 12101132111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19718518030848).

12101132111220 is an abundant number, since it is smaller than the sum of its proper divisors (27335903950476).

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

12101132111220 is a wasteful number, since it uses less digits than its factorization.

12101132111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185911 (or 185906 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12101132111220 its reverse (2211123110121), we get a palindrome (14312255221341).

The spelling of 12101132111220 in words is "twelve trillion, one hundred one billion, one hundred thirty-two million, one hundred eleven thousand, two hundred twenty".