11255505121 has 8 divisors (see below), whose sum is σ = 12920103360. Its totient is φ = 9605074128.

The previous prime is 11255505103. The next prime is 11255505127. The reversal of 11255505121 is 12150555211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11255505121 - 2¹⁷ = 11255374049 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 11255505121.

It is not an unprimeable number, because it can be changed into a prime (11255505127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3540106 + ... + 3543283.

It is an arithmetic number, because the mean of its divisors is an integer number (1615012920).

Almost surely, 2^11255505121 is an apocalyptic number.

It is an amenable number.

11255505121 is a deficient number, since it is larger than the sum of its proper divisors (1664598239).

11255505121 is an equidigital number, since it uses as much as digits as its factorization.

11255505121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083623.

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 11255505121 in words is "eleven billion, two hundred fifty-five million, five hundred five thousand, one hundred twenty-one".