11472121042 has 16 divisors (see below), whose sum is σ = 17605653912. Its totient is φ = 5604468480.

The previous prime is 11472121019. The next prime is 11472121123. The reversal of 11472121042 is 24012127411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10404204001 + 1067917041 = 102001^2 + 32679^2 .

It is a super-2 number, since 2×11472121042² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11472120998 and 11472121016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198993 + ... + 250084.

Almost surely, 2^11472121042 is an apocalyptic number.

11472121042 is a deficient number, since it is larger than the sum of its proper divisors (6133532870).

11472121042 is a wasteful number, since it uses less digits than its factorization.

11472121042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449373.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 11472121042 its reverse (24012127411), we get a palindrome (35484248453).

The spelling of 11472121042 in words is "eleven billion, four hundred seventy-two million, one hundred twenty-one thousand, forty-two".