11221112212 has 12 divisors (see below), whose sum is σ = 20490726816. Its totient is φ = 5366618840.

The previous prime is 11221112197. The next prime is 11221112213. The reversal of 11221112212 is 21221112211.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221112213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60984214 + ... + 60984397.

It is an arithmetic number, because the mean of its divisors is an integer number (1707560568).

Almost surely, 2^11221112212 is an apocalyptic number.

It is an amenable number.

11221112212 is a deficient number, since it is larger than the sum of its proper divisors (9269614604).

11221112212 is a wasteful number, since it uses less digits than its factorization.

11221112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121968638 (or 121968636 counting only the distinct ones).

The product of its digits is 32, while the sum is 16.

Adding to 11221112212 its reverse (21221112211), we get a palindrome (32442224423).

Subtracting 11221112212 from its reverse (21221112211), we obtain a palindrome (9999999999).

The spelling of 11221112212 in words is "eleven billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twelve".