13224121420 has 24 divisors (see below), whose sum is σ = 27850700304. Its totient is φ = 5274401856.

The previous prime is 13224121403. The next prime is 13224121433. The reversal of 13224121420 is 2412142231.

It is a junction number, because it is equal to n+sod(n) for n = 13224121391 and 13224121400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945807 + ... + 959686.

It is an arithmetic number, because the mean of its divisors is an integer number (1160445846).

Almost surely, 2^13224121420 is an apocalyptic number.

13224121420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13224121420 is an abundant number, since it is smaller than the sum of its proper divisors (14626578884).

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

13224121420 is a wasteful number, since it uses less digits than its factorization.

13224121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905849 (or 1905847 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 13224121420 its reverse (2412142231), we get a palindrome (15636263651).

The spelling of 13224121420 in words is "thirteen billion, two hundred twenty-four million, one hundred twenty-one thousand, four hundred twenty".