13212201112020 has 72 divisors (see below), whose sum is σ = 40322881356576. Its totient is φ = 3501638569152.

The previous prime is 13212201112013. The next prime is 13212201112021. The reversal of 13212201112020 is 2021110221231.

13212201112020 is a `hidden beast` number, since 1 + 321 + 2 + 201 + 1 + 120 + 20 = 666.

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 = 13212201111984 and 13212201112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212201112021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225127462 + ... + 225186141.

Almost surely, 2^{13212201112020} is an apocalyptic number.

13212201112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212201112020 is an abundant number, since it is smaller than the sum of its proper divisors (27110680244556).

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

13212201112020 is a wasteful number, since it uses less digits than its factorization.

13212201112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450313781 (or 450313776 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 13212201112020 its reverse (2021110221231), we get a palindrome (15233311333251).

The spelling of 13212201112020 in words is "thirteen trillion, two hundred twelve billion, two hundred one million, one hundred twelve thousand, twenty".