11213509011 has 8 divisors (see below), whose sum is σ = 14952248784. Its totient is φ = 7475220960.

The previous prime is 11213509001. The next prime is 11213509031. The reversal of 11213509011 is 11090531211.

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

It is not a de Polignac number, because 11213509011 - 2¹⁵ = 11213476243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11213509001) 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, 49996 + ... + 157881.

It is an arithmetic number, because the mean of its divisors is an integer number (1869031098).

Almost surely, 2^11213509011 is an apocalyptic number.

11213509011 is a deficient number, since it is larger than the sum of its proper divisors (3738739773).

11213509011 is a wasteful number, since it uses less digits than its factorization.

11213509011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225861.

The product of its (nonzero) digits is 270, while the sum is 24.

The spelling of 11213509011 in words is "eleven billion, two hundred thirteen million, five hundred nine thousand, eleven".