11420040021231 has 16 divisors (see below), whose sum is σ = 15275040313824. Its totient is φ = 7589200773504.

The previous prime is 11420040021197. The next prime is 11420040021233. The reversal of 11420040021231 is 13212004002411.

It is not a de Polignac number, because 11420040021231 - 2¹⁵ = 11420039988463 is a prime.

It is a super-2 number, since 2×11420040021231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11420040021198 and 11420040021207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420040021233) 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, 82375785 + ... + 82514301.

It is an arithmetic number, because the mean of its divisors is an integer number (954690019614).

Almost surely, 2^{11420040021231} is an apocalyptic number.

11420040021231 is a deficient number, since it is larger than the sum of its proper divisors (3855000292593).

11420040021231 is a wasteful number, since it uses less digits than its factorization.

11420040021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225530.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11420040021231 its reverse (13212004002411), we get a palindrome (24632044023642).

The spelling of 11420040021231 in words is "eleven trillion, four hundred twenty billion, forty million, twenty-one thousand, two hundred thirty-one".