1212320213 has 8 divisors (see below), whose sum is σ = 1374290400. Its totient is φ = 1060166448.

The previous prime is 1212320183. The next prime is 1212320227. The reversal of 1212320213 is 3120232121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212320213 - 2⁸ = 1212319957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212320191 and 1212320200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212320233) 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, 2453843 + ... + 2454336.

It is an arithmetic number, because the mean of its divisors is an integer number (171786300).

Almost surely, 2^1212320213 is an apocalyptic number.

1212320213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1212320213 is a deficient number, since it is larger than the sum of its proper divisors (161970187).

1212320213 is a wasteful number, since it uses less digits than its factorization.

1212320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908211.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1212320213 is about 34818.3890063857. The cubic root of 1212320213 is about 1066.2829104655.

Adding to 1212320213 its reverse (3120232121), we get a palindrome (4332552334).

The spelling of 1212320213 in words is "one billion, two hundred twelve million, three hundred twenty thousand, two hundred thirteen".