11222020212 has 96 divisors (see below), whose sum is σ = 30821059584. Its totient is φ = 3144960000.

The previous prime is 11222020193. The next prime is 11222020223. The reversal of 11222020212 is 21202022211.

It is a junction number, because it is equal to n+sod(n) for n = 11222020191 and 11222020200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13962 + ... + 150462.

It is an arithmetic number, because the mean of its divisors is an integer number (321052704).

Almost surely, 2^11222020212 is an apocalyptic number.

11222020212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11222020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15410529792).

11222020212 is an abundant number, since it is smaller than the sum of its proper divisors (19599039372).

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

11222020212 is a wasteful number, since it uses less digits than its factorization.

11222020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136569 (or 136567 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11222020212 its reverse (21202022211), we get a palindrome (32424042423).

The spelling of 11222020212 in words is "eleven billion, two hundred twenty-two million, twenty thousand, two hundred twelve".