1212102320 has 80 divisors (see below), whose sum is σ = 3310850592. Its totient is φ = 406855680.

The previous prime is 1212102289. The next prime is 1212102337. The reversal of 1212102320 is 232012121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1212102295 and 1212102304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41537 + ... + 64416.

Almost surely, 2^1212102320 is an apocalyptic number.

1212102320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212102320 is an abundant number, since it is smaller than the sum of its proper divisors (2098748272).

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

1212102320 is a wasteful number, since it uses less digits than its factorization.

1212102320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105990 (or 105984 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212102320 is about 34815.2598726478. The cubic root of 1212102320 is about 1066.2190248406.

Adding to 1212102320 its reverse (232012121), we get a palindrome (1444114441).

The spelling of 1212102320 in words is "one billion, two hundred twelve million, one hundred two thousand, three hundred twenty".