11220021000012 has 96 divisors (see below), whose sum is σ = 29032485801984. Its totient is φ = 3343780684800.

The previous prime is 11220021000011. The next prime is 11220021000017. The reversal of 11220021000012 is 21000012002211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (11220021000011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57095268 + ... + 57291444.

It is an arithmetic number, because the mean of its divisors is an integer number (302421727104).

Almost surely, 2^{11220021000012} is an apocalyptic number.

11220021000012 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 11220021000012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14516242900992).

11220021000012 is an abundant number, since it is smaller than the sum of its proper divisors (17812464801972).

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

11220021000012 is a wasteful number, since it uses less digits than its factorization.

11220021000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203359 (or 203357 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11220021000012 its reverse (21000012002211), we get a palindrome (32220033002223).

The spelling of 11220021000012 in words is "eleven trillion, two hundred twenty billion, twenty-one million, twelve", and thus it is an aban number.