1211122201201 has 8 divisors (see below), whose sum is σ = 1321246970208. Its totient is φ = 1101001224000.

The previous prime is 1211122201199. The next prime is 1211122201249. The reversal of 1211122201201 is 1021022211121.

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 1211122201201 - 2¹ = 1211122201199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211122202201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258280 + ... + 1577641.

It is an arithmetic number, because the mean of its divisors is an integer number (165155871276).

Almost surely, 2^{1211122201201} is an apocalyptic number.

1211122201201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1211122201201 is a deficient number, since it is larger than the sum of its proper divisors (110124769007).

1211122201201 is a wasteful number, since it uses less digits than its factorization.

1211122201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895903.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211122201201 its reverse (1021022211121), we get a palindrome (2232144412322).

The spelling of 1211122201201 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred one thousand, two hundred one".