11212201500551 has 4 divisors (see below), whose sum is σ = 11379547791672. Its totient is φ = 11044855209432.

The previous prime is 11212201500523. The next prime is 11212201500553. The reversal of 11212201500551 is 15500510221211.

11212201500551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212201500551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212201500551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212201500553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83673145460 + ... + 83673145593.

It is an arithmetic number, because the mean of its divisors is an integer number (2844886947918).

Almost surely, 2^{11212201500551} is an apocalyptic number.

11212201500551 is a deficient number, since it is larger than the sum of its proper divisors (167346291121).

11212201500551 is an equidigital number, since it uses as much as digits as its factorization.

11212201500551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167346291120.

The product of its (nonzero) digits is 1000, while the sum is 26.

Adding to 11212201500551 its reverse (15500510221211), we get a palindrome (26712711721762).

The spelling of 11212201500551 in words is "eleven trillion, two hundred twelve billion, two hundred one million, five hundred thousand, five hundred fifty-one".