11311001212 has 12 divisors (see below), whose sum is σ = 22622002480. Its totient is φ = 4847571936.

The previous prime is 11311001183. The next prime is 11311001231. The reversal of 11311001212 is 21210011311.

It is a happy number.

11311001212 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 11311001192 and 11311001201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201982137 + ... + 201982192.

Almost surely, 2^11311001212 is an apocalyptic number.

It is an amenable number.

11311001212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11311001212 is a wasteful number, since it uses less digits than its factorization.

11311001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403964340 (or 403964338 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11311001212 its reverse (21210011311), we get a palindrome (32521012523).

The spelling of 11311001212 in words is "eleven billion, three hundred eleven million, one thousand, two hundred twelve".