1212322320 has 120 divisors (see below), whose sum is σ = 4441537152. Its totient is φ = 293894400.

The previous prime is 1212322313. The next prime is 1212322327. The reversal of 1212322320 is 232232121.

1212322320 is a `hidden beast` number, since 1 + 21 + 2 + 322 + 320 = 666.

It is an interprime number because it is at equal distance from previous prime (1212322313) and next prime (1212322327).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1212322293 and 1212322302.

It is not an unprimeable number, because it can be changed into a prime (1212322327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68616 + ... + 84455.

Almost surely, 2^1212322320 is an apocalyptic number.

1212322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212322320 is an abundant number, since it is smaller than the sum of its proper divisors (3229214832).

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

1212322320 is a wasteful number, since it uses less digits than its factorization.

1212322320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153101 (or 153092 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1212322320 is about 34818.4192633727. The cubic root of 1212322320 is about 1066.2835281947.

Adding to 1212322320 its reverse (232232121), we get a palindrome (1444554441).

It can be divided in two parts, 12123 and 22320, that added together give a palindrome (34443).

The spelling of 1212322320 in words is "one billion, two hundred twelve million, three hundred twenty-two thousand, three hundred twenty".