11211112012 has 12 divisors (see below), whose sum is σ = 19621221480. Its totient is φ = 5605048736.

The previous prime is 11211111997. The next prime is 11211112057. The reversal of 11211112012 is 21021111211.

It is a happy number.

It is a super-2 number, since 2×11211112012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11211111983 and 11211112001.

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, 74713 + ... + 167344.

It is an arithmetic number, because the mean of its divisors is an integer number (1635101790).

Almost surely, 2^11211112012 is an apocalyptic number.

It is an amenable number.

11211112012 is a deficient number, since it is larger than the sum of its proper divisors (8410109468).

11211112012 is a wasteful number, since it uses less digits than its factorization.

11211112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253640 (or 253638 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11211112012 its reverse (21021111211), we get a palindrome (32232223223).

The spelling of 11211112012 in words is "eleven billion, two hundred eleven million, one hundred twelve thousand, twelve".