11251121044 has 6 divisors (see below), whose sum is σ = 19689461834. Its totient is φ = 5625560520.

The previous prime is 11251121041. The next prime is 11251121081. The reversal of 11251121044 is 44012115211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10771948944 + 479172100 = 103788^2 + 21890^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11251121041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1406390127 + ... + 1406390134.

Almost surely, 2^11251121044 is an apocalyptic number.

It is an amenable number.

11251121044 is a deficient number, since it is larger than the sum of its proper divisors (8438340790).

11251121044 is a wasteful number, since it uses less digits than its factorization.

11251121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812780265 (or 2812780263 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 11251121044 its reverse (44012115211), we get a palindrome (55263236255).

The spelling of 11251121044 in words is "eleven billion, two hundred fifty-one million, one hundred twenty-one thousand, forty-four".