11212420331 has 8 divisors (see below), whose sum is σ = 12829474560. Its totient is φ = 9599186088.

The previous prime is 11212420313. The next prime is 11212420337. The reversal of 11212420331 is 13302421211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212420331 - 2¹⁰ = 11212419307 is a prime.

It is a super-2 number, since 2×11212420331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212420337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948701 + ... + 960446.

It is an arithmetic number, because the mean of its divisors is an integer number (1603684320).

Almost surely, 2^11212420331 is an apocalyptic number.

11212420331 is a deficient number, since it is larger than the sum of its proper divisors (1617054229).

11212420331 is an equidigital number, since it uses as much as digits as its factorization.

11212420331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909993.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11212420331 its reverse (13302421211), we get a palindrome (24514841542).

The spelling of 11212420331 in words is "eleven billion, two hundred twelve million, four hundred twenty thousand, three hundred thirty-one".