11213210312 has 8 divisors (see below), whose sum is σ = 21024769350. Its totient is φ = 5606605152.

The previous prime is 11213210311. The next prime is 11213210317. The reversal of 11213210312 is 21301231211.

It can be written as a sum of positive squares in only one way, i.e., 10965021796 + 248188516 = 104714^2 + 15754^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11213210312² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11213210311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700825637 + ... + 700825652.

Almost surely, 2^11213210312 is an apocalyptic number.

It is an amenable number.

11213210312 is a deficient number, since it is larger than the sum of its proper divisors (9811559038).

11213210312 is a wasteful number, since it uses less digits than its factorization.

11213210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401651295 (or 1401651291 counting only the distinct ones).

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

Adding to 11213210312 its reverse (21301231211), we get a palindrome (32514441523).

The spelling of 11213210312 in words is "eleven billion, two hundred thirteen million, two hundred ten thousand, three hundred twelve".