11205001051 has 4 divisors (see below), whose sum is σ = 11246655600. Its totient is φ = 11163346504.

The previous prime is 11205000997. The next prime is 11205001061. The reversal of 11205001051 is 15010050211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15010050211 = 13 ⋅1154619247.

It is a cyclic number.

It is not a de Polignac number, because 11205001051 - 2⁷ = 11205000923 is a prime.

It is a super-2 number, since 2×11205001051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11205001061) 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, 20826871 + ... + 20827408.

It is an arithmetic number, because the mean of its divisors is an integer number (2811663900).

Almost surely, 2^11205001051 is an apocalyptic number.

11205001051 is a deficient number, since it is larger than the sum of its proper divisors (41654549).

11205001051 is an equidigital number, since it uses as much as digits as its factorization.

11205001051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41654548.

The product of its (nonzero) digits is 50, while the sum is 16.

Adding to 11205001051 its reverse (15010050211), we get a palindrome (26215051262).

The spelling of 11205001051 in words is "eleven billion, two hundred five million, one thousand, fifty-one".