12403030212 has 72 divisors (see below), whose sum is σ = 32411859480. Its totient is φ = 3996449280.

The previous prime is 12403030193. The next prime is 12403030229. The reversal of 12403030212 is 21203030421.

It can be written as a sum of positive squares in 4 ways, for example, as 50041476 + 12352988736 = 7074^2 + 111144^2 .

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 23 ways as a sum of consecutive naturals, for example, 122338 + ... + 199430.

It is an arithmetic number, because the mean of its divisors is an integer number (450164715).

Almost surely, 2^12403030212 is an apocalyptic number.

12403030212 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 12403030212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16205929740).

12403030212 is an abundant number, since it is smaller than the sum of its proper divisors (20008829268).

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

12403030212 is a wasteful number, since it uses less digits than its factorization.

12403030212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77253 (or 77248 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12403030212 its reverse (21203030421), we get a palindrome (33606060633).

The spelling of 12403030212 in words is "twelve billion, four hundred three million, thirty thousand, two hundred twelve".