11212230551520 has 192 divisors, whose sum is σ = 36043098094080. Its totient is φ = 2928771176448.

The previous prime is 11212230551497. The next prime is 11212230551551. The reversal of 11212230551520 is 2515503221211.

It is a super-2 number, since 2×11212230551520² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 15391357 + ... + 16103363.

It is an arithmetic number, because the mean of its divisors is an integer number (187724469240).

Almost surely, 2^{11212230551520} is an apocalyptic number.

11212230551520 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 11212230551520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18021549047040).

11212230551520 is an abundant number, since it is smaller than the sum of its proper divisors (24830867542560).

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

11212230551520 is a wasteful number, since it uses less digits than its factorization.

11212230551520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712697 (or 712689 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 11212230551520 its reverse (2515503221211), we get a palindrome (13727733772731).

The spelling of 11212230551520 in words is "eleven trillion, two hundred twelve billion, two hundred thirty million, five hundred fifty-one thousand, five hundred twenty".