11121012091 has 8 divisors (see below), whose sum is σ = 12717365760. Its totient is φ = 9526567848.

The previous prime is 11121012079. The next prime is 11121012107. The reversal of 11121012091 is 19021012111.

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

It is not a de Polignac number, because 11121012091 - 2¹³ = 11121003899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121013091) 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, 464851 + ... + 488188.

It is an arithmetic number, because the mean of its divisors is an integer number (1589670720).

Almost surely, 2^11121012091 is an apocalyptic number.

11121012091 is a deficient number, since it is larger than the sum of its proper divisors (1596353669).

11121012091 is an equidigital number, since it uses as much as digits as its factorization.

11121012091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954713.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 11121012091 in words is "eleven billion, one hundred twenty-one million, twelve thousand, ninety-one".