11211100201212 has 24 divisors (see below), whose sum is σ = 26159307597696. Its totient is φ = 3737022858288.

The previous prime is 11211100201193. The next prime is 11211100201237. The reversal of 11211100201212 is 21210200111211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11211100201191 and 11211100201200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3958273 + ... + 6171719.

It is an arithmetic number, because the mean of its divisors is an integer number (1089971149904).

Almost surely, 2^{11211100201212} is an apocalyptic number.

11211100201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211100201212 is an abundant number, since it is smaller than the sum of its proper divisors (14948207396484).

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

11211100201212 is a wasteful number, since it uses less digits than its factorization.

11211100201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635537 (or 2635535 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211100201212 its reverse (21210200111211), we get a palindrome (32421300312423).

Subtracting 11211100201212 from its reverse (21210200111211), we obtain a palindrome (9999099909999).

The spelling of 11211100201212 in words is "eleven trillion, two hundred eleven billion, one hundred million, two hundred one thousand, two hundred twelve".