1200120284838 has 64 divisors (see below), whose sum is σ = 2523166778880. Its totient is φ = 380066867712.

The previous prime is 1200120284809. The next prime is 1200120284927. The reversal of 1200120284838 is 8384820210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200120284796 and 1200120284805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37108231 + ... + 37140557.

It is an arithmetic number, because the mean of its divisors is an integer number (39424480920).

Almost surely, 2^{1200120284838} is an apocalyptic number.

1200120284838 is an abundant number, since it is smaller than the sum of its proper divisors (1323046494042).

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

1200120284838 is a wasteful number, since it uses less digits than its factorization.

1200120284838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36301.

The product of its (nonzero) digits is 49152, while the sum is 39.

Adding to 1200120284838 its reverse (8384820210021), we get a palindrome (9584940494859).

The spelling of 1200120284838 in words is "one trillion, two hundred billion, one hundred twenty million, two hundred eighty-four thousand, eight hundred thirty-eight".