11220442212 has 24 divisors (see below), whose sum is σ = 29921179456. Its totient is φ = 3205840608.

The previous prime is 11220442193. The next prime is 11220442241. The reversal of 11220442212 is 21224402211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66788263 + ... + 66788430.

Almost surely, 2^11220442212 is an apocalyptic number.

11220442212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220442212 is an abundant number, since it is smaller than the sum of its proper divisors (18700737244).

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

11220442212 is a wasteful number, since it uses less digits than its factorization.

11220442212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133576707 (or 133576705 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 11220442212 its reverse (21224402211), we get a palindrome (32444844423).

The spelling of 11220442212 in words is "eleven billion, two hundred twenty million, four hundred forty-two thousand, two hundred twelve".