11215511141200 has 60 divisors (see below), whose sum is σ = 26945608896448. Its totient is φ = 4486147286400.

The previous prime is 11215511141189. The next prime is 11215511141201. The reversal of 11215511141200 is 214111551211.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215511141201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46427929 + ... + 46668871.

Almost surely, 2^{11215511141200} is an apocalyptic number.

11215511141200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11215511141200 is an abundant number, since it is smaller than the sum of its proper divisors (15730097755248).

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

11215511141200 is a wasteful number, since it uses less digits than its factorization.

11215511141200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357332 (or 357321 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 25.

Adding to 11215511141200 its reverse (214111551211), we get a palindrome (11429622692411).

The spelling of 11215511141200 in words is "eleven trillion, two hundred fifteen billion, five hundred eleven million, one hundred forty-one thousand, two hundred".