1211211332201 has 8 divisors (see below), whose sum is σ = 1304389981440. Its totient is φ = 1118033903952.

The previous prime is 1211211332197. The next prime is 1211211332213. The reversal of 1211211332201 is 1022331121121.

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 1211211332201 - 2² = 1211211332197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211211331201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3796586 + ... + 4103228.

It is an arithmetic number, because the mean of its divisors is an integer number (163048747680).

Almost surely, 2^{1211211332201} is an apocalyptic number.

It is an amenable number.

1211211332201 is a deficient number, since it is larger than the sum of its proper divisors (93178649239).

1211211332201 is a wasteful number, since it uses less digits than its factorization.

1211211332201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610495.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1211211332201 its reverse (1022331121121), we get a palindrome (2233542453322).

The spelling of 1211211332201 in words is "one trillion, two hundred eleven billion, two hundred eleven million, three hundred thirty-two thousand, two hundred one".