1212161602 has 16 divisors (see below), whose sum is σ = 1834062912. Its totient is φ = 600817360.

The previous prime is 1212161539. The next prime is 1212161603. The reversal of 1212161602 is 2061612121.

It is not an unprimeable number, because it can be changed into a prime (1212161603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332763 + ... + 336385.

It is an arithmetic number, because the mean of its divisors is an integer number (114628932).

Almost surely, 2^1212161602 is an apocalyptic number.

1212161602 is a deficient number, since it is larger than the sum of its proper divisors (621901310).

1212161602 is a wasteful number, since it uses less digits than its factorization.

1212161602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1212161602 is about 34816.1112417800. Note that the first 3 decimals coincide. The cubic root of 1212161602 is about 1066.2364069171.

Adding to 1212161602 its reverse (2061612121), we get a palindrome (3273773723).

The spelling of 1212161602 in words is "one billion, two hundred twelve million, one hundred sixty-one thousand, six hundred two".