11211055551400 has 96 divisors (see below), whose sum is σ = 26093960739000. Its totient is φ = 4479563243520.

The previous prime is 11211055551349. The next prime is 11211055551407. The reversal of 11211055551400 is 415555011211.

It can be written as a sum of positive squares in 12 ways, for example, as 3129509597764 + 8081545953636 = 1769042^2 + 2842806^2 .

It is not an unprimeable number, because it can be changed into a prime (11211055551407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1346022436 + ... + 1346030764.

Almost surely, 2^{11211055551400} is an apocalyptic number.

11211055551400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211055551400 is an abundant number, since it is smaller than the sum of its proper divisors (14882905187600).

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

11211055551400 is a wasteful number, since it uses less digits than its factorization.

11211055551400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14831 (or 14822 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 31.

The spelling of 11211055551400 in words is "eleven trillion, two hundred eleven billion, fifty-five million, five hundred fifty-one thousand, four hundred".