11220020212 has 6 divisors (see below), whose sum is σ = 19635035378. Its totient is φ = 5610010104.

The previous prime is 11220020197. The next prime is 11220020219. The reversal of 11220020212 is 21202002211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11184331536 + 35688676 = 105756^2 + 5974^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11220020192 and 11220020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220020219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402502523 + ... + 1402502530.

Almost surely, 2^11220020212 is an apocalyptic number.

It is an amenable number.

11220020212 is a deficient number, since it is larger than the sum of its proper divisors (8415015166).

11220020212 is a wasteful number, since it uses less digits than its factorization.

11220020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805005057 (or 2805005055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11220020212 its reverse (21202002211), we get a palindrome (32422022423).

The spelling of 11220020212 in words is "eleven billion, two hundred twenty million, twenty thousand, two hundred twelve".