12235521121055 has 16 divisors (see below), whose sum is σ = 15460831739520. Its totient is φ = 9269975076768.

The previous prime is 12235521121003. The next prime is 12235521121067. The reversal of 12235521121055 is 55012112553221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12235521121055 - 2¹⁴ = 12235521104671 is a prime.

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, 22381157 + ... + 22921326.

It is an arithmetic number, because the mean of its divisors is an integer number (966301983720).

Almost surely, 2^{12235521121055} is an apocalyptic number.

12235521121055 is a deficient number, since it is larger than the sum of its proper divisors (3225310618465).

12235521121055 is a wasteful number, since it uses less digits than its factorization.

12235521121055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45305350.

The product of its (nonzero) digits is 30000, while the sum is 35.

Adding to 12235521121055 its reverse (55012112553221), we get a palindrome (67247633674276).

The spelling of 12235521121055 in words is "twelve trillion, two hundred thirty-five billion, five hundred twenty-one million, one hundred twenty-one thousand, fifty-five".