12100222121020 has 48 divisors (see below), whose sum is σ = 27890573413248. Its totient is φ = 4373086397760.

The previous prime is 12100222120999. The next prime is 12100222121023. The reversal of 12100222121020 is 2012122200121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12100222120985 and 12100222121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100222121023) 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, 168678894 + ... + 168750613.

It is an arithmetic number, because the mean of its divisors is an integer number (581053612776).

Almost surely, 2^{12100222121020} is an apocalyptic number.

12100222121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100222121020 is an abundant number, since it is smaller than the sum of its proper divisors (15790351292228).

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

12100222121020 is a wasteful number, since it uses less digits than its factorization.

12100222121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337429690 (or 337429688 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12100222121020 its reverse (2012122200121), we get a palindrome (14112344321141).

The spelling of 12100222121020 in words is "twelve trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty".