11203132121 has 16 divisors (see below), whose sum is σ = 11496038400. Its totient is φ = 10914528768.

The previous prime is 11203132093. The next prime is 11203132139. The reversal of 11203132121 is 12123130211.

It is not a de Polignac number, because 11203132121 - 2²² = 11198937817 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 11203132121.

It is not an unprimeable number, because it can be changed into a prime (11203132921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4168040 + ... + 4170726.

It is an arithmetic number, because the mean of its divisors is an integer number (718502400).

Almost surely, 2^11203132121 is an apocalyptic number.

It is an amenable number.

11203132121 is a deficient number, since it is larger than the sum of its proper divisors (292906279).

11203132121 is an equidigital number, since it uses as much as digits as its factorization.

11203132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11203132121 its reverse (12123130211), we get a palindrome (23326262332).

The spelling of 11203132121 in words is "eleven billion, two hundred three million, one hundred thirty-two thousand, one hundred twenty-one".