11421013023420 has 384 divisors, whose sum is σ = 44097077348352. Its totient is φ = 2131436851200.

The previous prime is 11421013023379. The next prime is 11421013023479. The reversal of 11421013023420 is 2432031012411.

11421013023420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11421013023420² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 347511 + ... + 4791950.

It is an arithmetic number, because the mean of its divisors is an integer number (114836138928).

Almost surely, 2^{11421013023420} is an apocalyptic number.

11421013023420 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 11421013023420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22048538674176).

11421013023420 is an abundant number, since it is smaller than the sum of its proper divisors (32676064324932).

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

11421013023420 is a wasteful number, since it uses less digits than its factorization.

11421013023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5139541 (or 5139539 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11421013023420 its reverse (2432031012411), we get a palindrome (13853044035831).

The spelling of 11421013023420 in words is "eleven trillion, four hundred twenty-one billion, thirteen million, twenty-three thousand, four hundred twenty".