1212201211 has 8 divisors (see below), whose sum is σ = 1326849104. Its totient is φ = 1100610720.

The previous prime is 1212201209. The next prime is 1212201217. The reversal of 1212201211 is 1121022121.

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 1212201211 - 2¹ = 1212201209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212201191 and 1212201200.

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, 763521 + ... + 765106.

It is an arithmetic number, because the mean of its divisors is an integer number (165856138).

Almost surely, 2^1212201211 is an apocalyptic number.

1212201211 is a deficient number, since it is larger than the sum of its proper divisors (114647893).

1212201211 is a wasteful number, since it uses less digits than its factorization.

1212201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528701.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1212201211 is about 34816.6800686108. The cubic root of 1212201211 is about 1066.2480203571.

Adding to 1212201211 its reverse (1121022121), we get a palindrome (2333223332).

The spelling of 1212201211 in words is "one billion, two hundred twelve million, two hundred one thousand, two hundred eleven".