12010002121220 has 48 divisors (see below), whose sum is σ = 26281137461040. Its totient is φ = 4604489078784.

The previous prime is 12010002121211. The next prime is 12010002121231. The reversal of 12010002121220 is 2212120001021.

It can be written as a sum of positive squares in 8 ways, for example, as 983445089344 + 11026557031876 = 991688^2 + 3320626^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12010002121195 and 12010002121204.

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, 75493169 + ... + 75652088.

It is an arithmetic number, because the mean of its divisors is an integer number (547523697105).

Almost surely, 2^{12010002121220} is an apocalyptic number.

12010002121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12010002121220 is an abundant number, since it is smaller than the sum of its proper divisors (14271135339820).

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

12010002121220 is a wasteful number, since it uses less digits than its factorization.

12010002121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151145432 (or 151145430 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12010002121220 its reverse (2212120001021), we get a palindrome (14222122122241).

The spelling of 12010002121220 in words is "twelve trillion, ten billion, two million, one hundred twenty-one thousand, two hundred twenty".