1211221200201 has 8 divisors (see below), whose sum is σ = 1615012209984. Its totient is φ = 807455495280.

The previous prime is 1211221200197. The next prime is 1211221200223. The reversal of 1211221200201 is 1020021221121.

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

It is not a de Polignac number, because 1211221200201 - 2² = 1211221200197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211221200271) 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, 6214246 + ... + 6406191.

It is an arithmetic number, because the mean of its divisors is an integer number (201876526248).

Almost surely, 2^{1211221200201} is an apocalyptic number.

It is an amenable number.

1211221200201 is a deficient number, since it is larger than the sum of its proper divisors (403791009783).

1211221200201 is a wasteful number, since it uses less digits than its factorization.

1211221200201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12652431.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1211221200201 its reverse (1020021221121), we get a palindrome (2231242421322).

The spelling of 1211221200201 in words is "one trillion, two hundred eleven billion, two hundred twenty-one million, two hundred thousand, two hundred one".