12202020 has 36 divisors (see below), whose sum is σ = 37013340. Its totient is φ = 3253824.

The previous prime is 12202019. The next prime is 12202027. The reversal of 12202020 is 2020221.

It can be written as a sum of positive squares in 2 ways, for example, as 8328996 + 3873024 = 2886^2 + 1968^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

12202020 is a modest number, since divided by 2020 gives 1220 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12201993 and 12202011.

It is not an unprimeable number, because it can be changed into a prime (12202027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33715 + ... + 34074.

Almost surely, 2^12202020 is an apocalyptic number.

12202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12202020 is an abundant number, since it is smaller than the sum of its proper divisors (24811320).

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

12202020 is a wasteful number, since it uses less digits than its factorization.

12202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67804 (or 67799 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 12202020 is about 3493.1389895050. The cubic root of 12202020 is about 230.2204565503.

Adding to 12202020 its reverse (2020221), we get a palindrome (14222241).

It can be divided in two parts, 1220 and 2020, that added together give a triangular number (3240 = T₈₀).

The spelling of 12202020 in words is "twelve million, two hundred two thousand, twenty".