12122111202020 has 24 divisors (see below), whose sum is σ = 25460072010744. Its totient is φ = 4848151435776.

The previous prime is 12122111202017. The next prime is 12122111202023. The reversal of 12122111202020 is 2020211122121.

It is an interprime number because it is at equal distance from previous prime (12122111202017) and next prime (12122111202023).

It can be written as a sum of positive squares in 4 ways, for example, as 363068912704 + 11759042289316 = 602552^2 + 3429146^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12122111202020.

It is not an unprimeable number, because it can be changed into a prime (12122111202023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43171877 + ... + 43451756.

It is an arithmetic number, because the mean of its divisors is an integer number (1060836333781).

Almost surely, 2^{12122111202020} is an apocalyptic number.

12122111202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122111202020 is an abundant number, since it is smaller than the sum of its proper divisors (13337960808724).

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

12122111202020 is a wasteful number, since it uses less digits than its factorization.

12122111202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86630639 (or 86630637 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12122111202020 its reverse (2020211122121), we get a palindrome (14142322324141).

The spelling of 12122111202020 in words is "twelve trillion, one hundred twenty-two billion, one hundred eleven million, two hundred two thousand, twenty".