12212030412 has 144 divisors (see below), whose sum is σ = 33271160832. Its totient is φ = 3766815360.

The previous prime is 12212030387. The next prime is 12212030429. The reversal of 12212030412 is 21403021221.

It is a happy number.

12212030412 is a `hidden beast` number, since 1 + 221 + 2 + 0 + 30 + 412 = 666.

It is a super-2 number, since 2×12212030412² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5850433 + ... + 5852519.

It is an arithmetic number, because the mean of its divisors is an integer number (231049728).

Almost surely, 2^12212030412 is an apocalyptic number.

12212030412 is a gapful number since it is divisible by the number (12) 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 12212030412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16635580416).

12212030412 is an abundant number, since it is smaller than the sum of its proper divisors (21059130420).

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

12212030412 is a wasteful number, since it uses less digits than its factorization.

12212030412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12212030412 its reverse (21403021221), we get a palindrome (33615051633).

The spelling of 12212030412 in words is "twelve billion, two hundred twelve million, thirty thousand, four hundred twelve".