12213465400 has 96 divisors (see below), whose sum is σ = 29378900880. Its totient is φ = 4718720000.

The previous prime is 12213465389. The next prime is 12213465401. The reversal of 12213465400 is 456431221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213465401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 820827 + ... + 835573.

Almost surely, 2^12213465400 is an apocalyptic number.

12213465400 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 12213465400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14689450440).

12213465400 is an abundant number, since it is smaller than the sum of its proper divisors (17165435480).

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

12213465400 is a wasteful number, since it uses less digits than its factorization.

12213465400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14905 (or 14896 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 12213465400 its reverse (456431221), we get a palindrome (12669896621).

The spelling of 12213465400 in words is "twelve billion, two hundred thirteen million, four hundred sixty-five thousand, four hundred".