11121016655 has 16 divisors (see below), whose sum is σ = 15253406784. Its totient is φ = 7624976640.

The previous prime is 11121016607. The next prime is 11121016681. The reversal of 11121016655 is 55661012111.

It is not a de Polignac number, because 11121016655 - 2¹⁴ = 11121000271 is a prime.

It is a super-2 number, since 2×11121016655² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535139 + ... + 555531.

It is an arithmetic number, because the mean of its divisors is an integer number (953337924).

Almost surely, 2^11121016655 is an apocalyptic number.

11121016655 is a deficient number, since it is larger than the sum of its proper divisors (4132390129).

11121016655 is a wasteful number, since it uses less digits than its factorization.

11121016655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35986.

The product of its (nonzero) digits is 1800, while the sum is 29.

Adding to 11121016655 its reverse (55661012111), we get a palindrome (66782028766).

The spelling of 11121016655 in words is "eleven billion, one hundred twenty-one million, sixteen thousand, six hundred fifty-five".