12121011002020 has 24 divisors (see below), whose sum is σ = 25458820531200. Its totient is φ = 4847509652832.

The previous prime is 12121011002011. The next prime is 12121011002033. The reversal of 12121011002020 is 2020011012121.

It is a super-2 number, since 2×12121011002020² (a number of 27 digits) contains 22 as substring.

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, 55810660 + ... + 56027419.

It is an arithmetic number, because the mean of its divisors is an integer number (1060784188800).

Almost surely, 2^{12121011002020} is an apocalyptic number.

12121011002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121011002020 is an abundant number, since it is smaller than the sum of its proper divisors (13337809529180).

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

12121011002020 is a wasteful number, since it uses less digits than its factorization.

12121011002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111843507 (or 111843505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12121011002020 its reverse (2020011012121), we get a palindrome (14141022014141).

The spelling of 12121011002020 in words is "twelve trillion, one hundred twenty-one billion, eleven million, two thousand, twenty".