11010121236 has 48 divisors (see below), whose sum is σ = 28769556480. Its totient is φ = 3641137920.

The previous prime is 11010121163. The next prime is 11010121249. The reversal of 11010121236 is 63212101011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387645 + ... + 415076.

It is an arithmetic number, because the mean of its divisors is an integer number (599365760).

Almost surely, 2^11010121236 is an apocalyptic number.

It is an amenable number.

11010121236 is an abundant number, since it is smaller than the sum of its proper divisors (17759435244).

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

11010121236 is a wasteful number, since it uses less digits than its factorization.

11010121236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802861 (or 802853 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11010121236 its reverse (63212101011), we get a palindrome (74222222247).

The spelling of 11010121236 in words is "eleven billion, ten million, one hundred twenty-one thousand, two hundred thirty-six".