11041220999 has 4 divisors (see below), whose sum is σ = 11044761840. Its totient is φ = 11037680160.

The previous prime is 11041220987. The next prime is 11041221029. The reversal of 11041220999 is 99902214011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11041220999 - 2¹² = 11041216903 is a prime.

It is a super-2 number, since 2×11041220999² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11041220959) 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, 1765739 + ... + 1771980.

It is an arithmetic number, because the mean of its divisors is an integer number (2761190460).

Almost surely, 2^11041220999 is an apocalyptic number.

11041220999 is a deficient number, since it is larger than the sum of its proper divisors (3540841).

11041220999 is an equidigital number, since it uses as much as digits as its factorization.

11041220999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540840.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 11041220999 in words is "eleven billion, forty-one million, two hundred twenty thousand, nine hundred ninety-nine".