1228542512236 has 24 divisors (see below), whose sum is σ = 2364592466880. Its totient is φ = 554955372672.

The previous prime is 1228542512221. The next prime is 1228542512243. The reversal of 1228542512236 is 6322152458221.

It is a super-2 number, since 2×1228542512236² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1228542512192 and 1228542512201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251336041 + ... + 251340928.

It is an arithmetic number, because the mean of its divisors is an integer number (98524686120).

Almost surely, 2^{1228542512236} is an apocalyptic number.

It is an amenable number.

1228542512236 is a deficient number, since it is larger than the sum of its proper divisors (1136049954644).

1228542512236 is a wasteful number, since it uses less digits than its factorization.

1228542512236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502677033 (or 502677031 counting only the distinct ones).

The product of its digits is 460800, while the sum is 43.

The spelling of 1228542512236 in words is "one trillion, two hundred twenty-eight billion, five hundred forty-two million, five hundred twelve thousand, two hundred thirty-six".