12121142432020 has 24 divisors (see below), whose sum is σ = 25472236868064. Its totient is φ = 4845059304096.

The previous prime is 12121142431973. The next prime is 12121142432059. The reversal of 12121142432020 is 2023424112121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212325042 + ... + 212382121.

It is an arithmetic number, because the mean of its divisors is an integer number (1061343202836).

Almost surely, 2^{12121142432020} is an apocalyptic number.

12121142432020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121142432020 is an abundant number, since it is smaller than the sum of its proper divisors (13351094436044).

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

12121142432020 is a wasteful number, since it uses less digits than its factorization.

12121142432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424708599 (or 424708597 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 12121142432020 its reverse (2023424112121), we get a palindrome (14144566544141).

The spelling of 12121142432020 in words is "twelve trillion, one hundred twenty-one billion, one hundred forty-two million, four hundred thirty-two thousand, twenty".