12122221201020 has 72 divisors (see below), whose sum is σ = 42023700167904. Its totient is φ = 2770793417088.

The previous prime is 12122221201007. The next prime is 12122221201033. The reversal of 12122221201020 is 2010212222121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12122221201007) and next prime (12122221201033).

It is a super-3 number, since 3×12122221201020³ (a number of 40 digits) contains 333 as substring.

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 = 12122221200984 and 12122221201002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4810403979 + ... + 4810406498.

It is an arithmetic number, because the mean of its divisors is an integer number (583662502332).

Almost surely, 2^{12122221201020} is an apocalyptic number.

12122221201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122221201020 is an abundant number, since it is smaller than the sum of its proper divisors (29901478966884).

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

12122221201020 is a wasteful number, since it uses less digits than its factorization.

12122221201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9620810499 (or 9620810494 counting only the distinct ones).

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

Adding to 12122221201020 its reverse (2010212222121), we get a palindrome (14132433423141).

The spelling of 12122221201020 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, twenty".