11420454021 has 16 divisors (see below), whose sum is σ = 16126200000. Its totient is φ = 7164350208.

The previous prime is 11420454007. The next prime is 11420454029. The reversal of 11420454021 is 12045402411.

It is not a de Polignac number, because 11420454021 - 2⁹ = 11420453509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11420453982 and 11420454000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420454029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275355 + ... + 314103.

It is an arithmetic number, because the mean of its divisors is an integer number (1007887500).

Almost surely, 2^11420454021 is an apocalyptic number.

It is an amenable number.

11420454021 is a deficient number, since it is larger than the sum of its proper divisors (4705745979).

11420454021 is a wasteful number, since it uses less digits than its factorization.

11420454021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44548.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 11420454021 its reverse (12045402411), we get a palindrome (23465856432).

The spelling of 11420454021 in words is "eleven billion, four hundred twenty million, four hundred fifty-four thousand, twenty-one".