11101213291 has 4 divisors (see below), whose sum is σ = 12687100912. Its totient is φ = 9515325672.

The previous prime is 11101213271. The next prime is 11101213297. The reversal of 11101213291 is 19231210111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19231210111 = 5309 ⋅3622379.

It is a cyclic number.

It is not a de Polignac number, because 11101213291 - 2¹³ = 11101205099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101213297) 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, 792943800 + ... + 792943813.

It is an arithmetic number, because the mean of its divisors is an integer number (3171775228).

Almost surely, 2^11101213291 is an apocalyptic number.

11101213291 is a deficient number, since it is larger than the sum of its proper divisors (1585887621).

11101213291 is an equidigital number, since it uses as much as digits as its factorization.

11101213291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585887620.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 11101213291 in words is "eleven billion, one hundred one million, two hundred thirteen thousand, two hundred ninety-one".