11031321212 has 12 divisors (see below), whose sum is σ = 19312487376. Its totient is φ = 5513467680.

The previous prime is 11031321211. The next prime is 11031321221. The reversal of 11031321212 is 21212313011.

It is a super-2 number, since 2×11031321212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031321211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536888 + ... + 557055.

It is an arithmetic number, because the mean of its divisors is an integer number (1609373948).

Almost surely, 2^11031321212 is an apocalyptic number.

It is an amenable number.

11031321212 is a deficient number, since it is larger than the sum of its proper divisors (8281166164).

11031321212 is a wasteful number, since it uses less digits than its factorization.

11031321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096468 (or 1096466 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11031321212 its reverse (21212313011), we get a palindrome (32243634223).

The spelling of 11031321212 in words is "eleven billion, thirty-one million, three hundred twenty-one thousand, two hundred twelve".