11851229512228 has 12 divisors (see below), whose sum is σ = 20755741377420. Its totient is φ = 5921017690112.

The previous prime is 11851229512217. The next prime is 11851229512229. The reversal of 11851229512228 is 82221592215811.

It can be written as a sum of positive squares in 2 ways, for example, as 7736530857444 + 4114698654784 = 2781462^2 + 2028472^2 .

It is not an unprimeable number, because it can be changed into a prime (11851229512229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1149260701 + ... + 1149271012.

It is an arithmetic number, because the mean of its divisors is an integer number (1729645114785).

Almost surely, 2^{11851229512228} is an apocalyptic number.

It is an amenable number.

11851229512228 is a deficient number, since it is larger than the sum of its proper divisors (8904511865192).

11851229512228 is a wasteful number, since it uses less digits than its factorization.

11851229512228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298533006 (or 2298533004 counting only the distinct ones).

The product of its digits is 460800, while the sum is 49.

The spelling of 11851229512228 in words is "eleven trillion, eight hundred fifty-one billion, two hundred twenty-nine million, five hundred twelve thousand, two hundred twenty-eight".