11210121553 has 4 divisors (see below), whose sum is σ = 11217222640. Its totient is φ = 11203020468.

The previous prime is 11210121539. The next prime is 11210121563. The reversal of 11210121553 is 35512101211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11210121553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11210121563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3548175 + ... + 3551332.

It is an arithmetic number, because the mean of its divisors is an integer number (2804305660).

Almost surely, 2^11210121553 is an apocalyptic number.

It is an amenable number.

11210121553 is a deficient number, since it is larger than the sum of its proper divisors (7101087).

11210121553 is an equidigital number, since it uses as much as digits as its factorization.

11210121553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101086.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 11210121553 its reverse (35512101211), we get a palindrome (46722222764).

The spelling of 11210121553 in words is "eleven billion, two hundred ten million, one hundred twenty-one thousand, five hundred fifty-three".