12122102221020 has 144 divisors (see below), whose sum is σ = 40114576101600. Its totient is φ = 2938586112000.

The previous prime is 12122102221013. The next prime is 12122102221049. The reversal of 12122102221020 is 2012220122121.

It is a happy number.

12122102221020 is a `hidden beast` number, since 1 + 212 + 210 + 2 + 221 + 0 + 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 = 12122102220984 and 12122102221002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64852656 + ... + 65039304.

It is an arithmetic number, because the mean of its divisors is an integer number (278573445150).

Almost surely, 2^{12122102221020} is an apocalyptic number.

12122102221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122102221020 is an abundant number, since it is smaller than the sum of its proper divisors (27992473880580).

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

12122102221020 is a wasteful number, since it uses less digits than its factorization.

12122102221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219476 (or 219471 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12122102221020 its reverse (2012220122121), we get a palindrome (14134322343141).

The spelling of 12122102221020 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, two hundred twenty-one thousand, twenty".