11215111054 has 32 divisors (see below), whose sum is σ = 19879001856. Its totient is φ = 4645394880.

The previous prime is 11215111051. The next prime is 11215111079. The reversal of 11215111054 is 45011151211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215111051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29884 + ... + 152719.

It is an arithmetic number, because the mean of its divisors is an integer number (621218808).

Almost surely, 2^11215111054 is an apocalyptic number.

11215111054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11215111054 is a deficient number, since it is larger than the sum of its proper divisors (8663890802).

11215111054 is a wasteful number, since it uses less digits than its factorization.

11215111054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182760.

The product of its (nonzero) digits is 200, while the sum is 22.

Adding to 11215111054 its reverse (45011151211), we get a palindrome (56226262265).

The spelling of 11215111054 in words is "eleven billion, two hundred fifteen million, one hundred eleven thousand, fifty-four".