12210312212020 has 24 divisors (see below), whose sum is σ = 27614090695464. Its totient is φ = 4508422970496.

The previous prime is 12210312211991. The next prime is 12210312212029. The reversal of 12210312212020 is 2021221301221.

It can be written as a sum of positive squares in 4 ways, for example, as 1879821976356 + 10330490235664 = 1371066^2 + 3214108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210312212029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23481369379 + ... + 23481369898.

It is an arithmetic number, because the mean of its divisors is an integer number (1150587112311).

Almost surely, 2^{12210312212020} is an apocalyptic number.

12210312212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210312212020 is an abundant number, since it is smaller than the sum of its proper divisors (15403778483444).

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

12210312212020 is a wasteful number, since it uses less digits than its factorization.

12210312212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46962739299 (or 46962739297 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12210312212020 its reverse (2021221301221), we get a palindrome (14231533513241).

The spelling of 12210312212020 in words is "twelve trillion, two hundred ten billion, three hundred twelve million, two hundred twelve thousand, twenty".