11211420331 has 2 divisors, whose sum is σ = 11211420332. Its totient is φ = 11211420330.

The previous prime is 11211420301. The next prime is 11211420379. The reversal of 11211420331 is 13302411211.

It is a weak prime.

It is an emirp because it is prime and its reverse (13302411211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11211420331 - 2¹³ = 11211412139 is a prime.

It is a super-2 number, since 2×11211420331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11211420299 and 11211420308.

It is not a weakly prime, because it can be changed into another prime (11211420301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605710165 + 5605710166.

It is an arithmetic number, because the mean of its divisors is an integer number (5605710166).

Almost surely, 2^11211420331 is an apocalyptic number.

11211420331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211420331 is an equidigital number, since it uses as much as digits as its factorization.

11211420331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11211420331 its reverse (13302411211), we get a palindrome (24513831542).

The spelling of 11211420331 in words is "eleven billion, two hundred eleven million, four hundred twenty thousand, three hundred thirty-one".