11205220279 has 8 divisors (see below), whose sum is σ = 12228289920. Its totient is φ = 10182886200.

The previous prime is 11205220259. The next prime is 11205220283. The reversal of 11205220279 is 97202250211.

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 11205220279 - 2¹⁹ = 11204695991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11205220279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205220219) 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, 151789 + ... + 213190.

It is an arithmetic number, because the mean of its divisors is an integer number (1528536240).

Almost surely, 2^11205220279 is an apocalyptic number.

11205220279 is a deficient number, since it is larger than the sum of its proper divisors (1023069641).

11205220279 is a wasteful number, since it uses less digits than its factorization.

11205220279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367781.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 11205220279 in words is "eleven billion, two hundred five million, two hundred twenty thousand, two hundred seventy-nine".