12120221101020 has 48 divisors (see below), whose sum is σ = 34078613345280. Its totient is φ = 3218535697216.

The previous prime is 12120221100997. The next prime is 12120221101033. The reversal of 12120221101020 is 2010112202121.

It is a super-2 number, since 2×12120221101020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 422587512 + ... + 422616191.

It is an arithmetic number, because the mean of its divisors is an integer number (709971111360).

Almost surely, 2^{12120221101020} is an apocalyptic number.

12120221101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120221101020 is an abundant number, since it is smaller than the sum of its proper divisors (21958392244260).

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

12120221101020 is a wasteful number, since it uses less digits than its factorization.

12120221101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845203954 (or 845203952 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12120221101020 its reverse (2010112202121), we get a palindrome (14130333303141).

The spelling of 12120221101020 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, one hundred one thousand, twenty".