11201121099 has 32 divisors (see below), whose sum is σ = 19231994880. Its totient is φ = 6310483200.

The previous prime is 11201121067. The next prime is 11201121119. The reversal of 11201121099 is 99012110211.

It is not a de Polignac number, because 11201121099 - 2⁵ = 11201121067 is a prime.

It is a super-2 number, since 2×11201121099² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11201121059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403942 + ... + 430779.

It is an arithmetic number, because the mean of its divisors is an integer number (600999840).

Almost surely, 2^11201121099 is an apocalyptic number.

11201121099 is a deficient number, since it is larger than the sum of its proper divisors (8030873781).

11201121099 is an equidigital number, since it uses as much as digits as its factorization.

11201121099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834808 (or 834802 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

It can be divided in two parts, 1120112 and 1099, that added together give a palindrome (1121211).

The spelling of 11201121099 in words is "eleven billion, two hundred one million, one hundred twenty-one thousand, ninety-nine".