11420213403340 has 144 divisors (see below), whose sum is σ = 29734634865600. Its totient is φ = 3660772147200.

The previous prime is 11420213403233. The next prime is 11420213403349. The reversal of 11420213403340 is 4330431202411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 11420213403299 and 11420213403308.

It is not an unprimeable number, because it can be changed into a prime (11420213403349) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245836 + ... + 4785484.

It is an arithmetic number, because the mean of its divisors is an integer number (206490519900).

Almost surely, 2^{11420213403340} is an apocalyptic number.

11420213403340 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 11420213403340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14867317432800).

11420213403340 is an abundant number, since it is smaller than the sum of its proper divisors (18314421462260).

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

11420213403340 is a wasteful number, since it uses less digits than its factorization.

11420213403340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539840 (or 4539831 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 11420213403340 its reverse (4330431202411), we get a palindrome (15750644605751).

The spelling of 11420213403340 in words is "eleven trillion, four hundred twenty billion, two hundred thirteen million, four hundred three thousand, three hundred forty".