11021212000000 has 126 divisors (see below), whose sum is σ = 27498873478664. Its totient is φ = 4408483200000.

The previous prime is 11021211999989. The next prime is 11021212000049. The reversal of 11021212000000 is 21212011.

It is a super-2 number, since 2×11021212000000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2622349 + ... + 5377651.

Almost surely, 2^{11021212000000} is an apocalyptic number.

11021212000000 is a gapful number since it is divisible by the number (10) 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 11021212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13749436739332).

11021212000000 is an abundant number, since it is smaller than the sum of its proper divisors (16477661478664).

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

11021212000000 is an frugal number, since it uses more digits than its factorization.

11021212000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755349 (or 2755310 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11021212000000 its reverse (21212011), we get a palindrome (11021233212011).

The spelling of 11021212000000 in words is "eleven trillion, twenty-one billion, two hundred twelve million", and thus it is an aban number.