11212100012 has 12 divisors (see below), whose sum is σ = 19794814536. Its totient is φ = 5556438720.

The previous prime is 11212099979. The next prime is 11212100023. The reversal of 11212100012 is 21000121211.

It is a super-2 number, since 2×11212100012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11212099966 and 11212100002.

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, 12402314 + ... + 12403217.

It is an arithmetic number, because the mean of its divisors is an integer number (1649567878).

Almost surely, 2^11212100012 is an apocalyptic number.

It is an amenable number.

11212100012 is a deficient number, since it is larger than the sum of its proper divisors (8582714524).

11212100012 is a wasteful number, since it uses less digits than its factorization.

11212100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24805648 (or 24805646 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11212100012 its reverse (21000121211), we get a palindrome (32212221223).

The spelling of 11212100012 in words is "eleven billion, two hundred twelve million, one hundred thousand, twelve".