11501212255 has 32 divisors (see below), whose sum is σ = 15213961728. Its totient is φ = 8294966400.

The previous prime is 11501212241. The next prime is 11501212271. The reversal of 11501212255 is 55221210511.

It is a happy number.

It is not a de Polignac number, because 11501212255 - 2¹³ = 11501204063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482160 + ... + 505450.

It is an arithmetic number, because the mean of its divisors is an integer number (475436304).

Almost surely, 2^11501212255 is an apocalyptic number.

11501212255 is a deficient number, since it is larger than the sum of its proper divisors (3712749473).

11501212255 is a wasteful number, since it uses less digits than its factorization.

11501212255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23487.

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 11501212255 its reverse (55221210511), we get a palindrome (66722422766).

The spelling of 11501212255 in words is "eleven billion, five hundred one million, two hundred twelve thousand, two hundred fifty-five".