12212242020 has 432 divisors, whose sum is σ = 44488691520. Its totient is φ = 2802159360.

The previous prime is 12212242019. The next prime is 12212242079. The reversal of 12212242020 is 2024221221.

12212242020 is a `hidden beast` number, since 1 + 221 + 2 + 2 + 420 + 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 = 12212241984 and 12212242002.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11172594 + ... + 11173686.

Almost surely, 2^12212242020 is an apocalyptic number.

12212242020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212242020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22244345760).

12212242020 is an abundant number, since it is smaller than the sum of its proper divisors (32276449500).

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

12212242020 is a wasteful number, since it uses less digits than its factorization.

12212242020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12212242020 its reverse (2024221221), we get a palindrome (14236463241).

The spelling of 12212242020 in words is "twelve billion, two hundred twelve million, two hundred forty-two thousand, twenty".