11211130212 has 24 divisors (see below), whose sum is σ = 27296665536. Its totient is φ = 3574563168.

The previous prime is 11211130127. The next prime is 11211130219. The reversal of 11211130212 is 21203111211.

It is a junction number, because it is equal to n+sod(n) for n = 11211130191 and 11211130200.

It is not an unprimeable number, because it can be changed into a prime (11211130219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20309743 + ... + 20310294.

It is an arithmetic number, because the mean of its divisors is an integer number (1137361064).

Almost surely, 2^11211130212 is an apocalyptic number.

11211130212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211130212 is an abundant number, since it is smaller than the sum of its proper divisors (16085535324).

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

11211130212 is a wasteful number, since it uses less digits than its factorization.

11211130212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40620067 (or 40620065 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11211130212 its reverse (21203111211), we get a palindrome (32414241423).

The spelling of 11211130212 in words is "eleven billion, two hundred eleven million, one hundred thirty thousand, two hundred twelve".