1200215118 has 32 divisors (see below), whose sum is σ = 2529626112. Its totient is φ = 378884000.

The previous prime is 1200215117. The next prime is 1200215131. The reversal of 1200215118 is 8115120021.

It is a junction number, because it is equal to n+sod(n) for n = 1200215094 and 1200215103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200215117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29118 + ... + 56993.

It is an arithmetic number, because the mean of its divisors is an integer number (79050816).

Almost surely, 2^1200215118 is an apocalyptic number.

1200215118 is an abundant number, since it is smaller than the sum of its proper divisors (1329410994).

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

1200215118 is a wasteful number, since it uses less digits than its factorization.

1200215118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86240.

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 1200215118 is about 34644.1209731175. The cubic root of 1200215118 is about 1062.7220645514.

Adding to 1200215118 its reverse (8115120021), we get a palindrome (9315335139).

The spelling of 1200215118 in words is "one billion, two hundred million, two hundred fifteen thousand, one hundred eighteen".