1212201213 has 8 divisors (see below), whose sum is σ = 1646764128. Its totient is φ = 792886224.

The previous prime is 1212201209. The next prime is 1212201217. The reversal of 1212201213 is 3121022121.

It is an interprime number because it is at equal distance from previous prime (1212201209) and next prime (1212201217).

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

It is not a de Polignac number, because 1212201213 - 2² = 1212201209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1212201192 and 1212201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201217) 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, 3811795 + ... + 3812112.

It is an arithmetic number, because the mean of its divisors is an integer number (205845516).

Almost surely, 2^1212201213 is an apocalyptic number.

It is an amenable number.

1212201213 is a deficient number, since it is larger than the sum of its proper divisors (434562915).

1212201213 is an equidigital number, since it uses as much as digits as its factorization.

1212201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623963.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1212201213 is about 34816.6800973327. The cubic root of 1212201213 is about 1066.2480209435.

Adding to 1212201213 its reverse (3121022121), we get a palindrome (4333223334).

The spelling of 1212201213 in words is "one billion, two hundred twelve million, two hundred one thousand, two hundred thirteen".