11201211221212 has 12 divisors (see below), whose sum is σ = 19602947909776. Its totient is φ = 5600368961280.

The previous prime is 11201211221197. The next prime is 11201211221237. The reversal of 11201211221212 is 21212211210211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11201211221212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59055813 + ... + 59245180.

Almost surely, 2^{11201211221212} is an apocalyptic number.

It is an amenable number.

11201211221212 is a deficient number, since it is larger than the sum of its proper divisors (8401736688564).

11201211221212 is a wasteful number, since it uses less digits than its factorization.

11201211221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118324668 (or 118324666 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11201211221212 its reverse (21212211210211), we get a palindrome (32413422431423).

The spelling of 11201211221212 in words is "eleven trillion, two hundred one billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twelve".