11205211051 has 8 divisors (see below), whose sum is σ = 11611684224. Its totient is φ = 10801551360.

The previous prime is 11205211049. The next prime is 11205211057. The reversal of 11205211051 is 15011250211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11205211051 - 2¹ = 11205211049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11205211057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695260 + ... + 711193.

It is an arithmetic number, because the mean of its divisors is an integer number (1451460528).

Almost surely, 2^11205211051 is an apocalyptic number.

11205211051 is a deficient number, since it is larger than the sum of its proper divisors (406473173).

11205211051 is a wasteful number, since it uses less digits than its factorization.

11205211051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406741.

The product of its (nonzero) digits is 100, while the sum is 19.

Adding to 11205211051 its reverse (15011250211), we get a palindrome (26216461262).

The spelling of 11205211051 in words is "eleven billion, two hundred five million, two hundred eleven thousand, fifty-one".