1205216132 has 48 divisors (see below), whose sum is σ = 2248243200. Its totient is φ = 563721120.

The previous prime is 1205216093. The next prime is 1205216137. The reversal of 1205216132 is 2316125021.

It is a junction number, because it is equal to n+sod(n) for n = 1205216098 and 1205216107.

It is not an unprimeable number, because it can be changed into a prime (1205216137) 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, 3356969 + ... + 3357327.

It is an arithmetic number, because the mean of its divisors is an integer number (46838400).

Almost surely, 2^1205216132 is an apocalyptic number.

It is an amenable number.

1205216132 is a deficient number, since it is larger than the sum of its proper divisors (1043027068).

1205216132 is a wasteful number, since it uses less digits than its factorization.

1205216132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1205216132 is about 34716.2228936271. Note that the first 3 decimals coincide. The cubic root of 1205216132 is about 1064.1960567824.

The spelling of 1205216132 in words is "one billion, two hundred five million, two hundred sixteen thousand, one hundred thirty-two".