11214401720 has 128 divisors (see below), whose sum is σ = 26420359680. Its totient is φ = 4280640000.

The previous prime is 11214401717. The next prime is 11214401741. The reversal of 11214401720 is 2710441211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15997370 + ... + 15998070.

It is an arithmetic number, because the mean of its divisors is an integer number (206409060).

Almost surely, 2^11214401720 is an apocalyptic number.

11214401720 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 11214401720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13210179840).

11214401720 is an abundant number, since it is smaller than the sum of its proper divisors (15205957960).

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

11214401720 is a wasteful number, since it uses less digits than its factorization.

11214401720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 11214401720 its reverse (2710441211), we get a palindrome (13924842931).

The spelling of 11214401720 in words is "eleven billion, two hundred fourteen million, four hundred one thousand, seven hundred twenty".