11099261142 has 64 divisors (see below), whose sum is σ = 25519104000. Its totient is φ = 3572190720.

The previous prime is 11099261137. The next prime is 11099261143. The reversal of 11099261142 is 24116299011.

It is a happy number.

It is a super-2 number, since 2×11099261142² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11099261097 and 11099261106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11099261143) 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, 744243 + ... + 759009.

It is an arithmetic number, because the mean of its divisors is an integer number (398736000).

Almost surely, 2^11099261142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11099261142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12759552000).

11099261142 is an abundant number, since it is smaller than the sum of its proper divisors (14419842858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11099261142 is a wasteful number, since it uses less digits than its factorization.

11099261142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15258 (or 15252 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 11099261142 in words is "eleven billion, ninety-nine million, two hundred sixty-one thousand, one hundred forty-two".