1201221111201 has 8 divisors (see below), whose sum is σ = 1635705343104. Its totient is φ = 783775476720.

The previous prime is 1201221111199. The next prime is 1201221111217. The reversal of 1201221111201 is 1021111221021.

It is a happy number.

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

It is not a de Polignac number, because 1201221111201 - 2¹ = 1201221111199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201221111281) 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, 4259649190 + ... + 4259649471.

It is an arithmetic number, because the mean of its divisors is an integer number (204463167888).

Almost surely, 2^{1201221111201} is an apocalyptic number.

It is an amenable number.

1201221111201 is a deficient number, since it is larger than the sum of its proper divisors (434484231903).

1201221111201 is an equidigital number, since it uses as much as digits as its factorization.

1201221111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8519298711.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1201221111201 its reverse (1021111221021), we get a palindrome (2222332332222).

The spelling of 1201221111201 in words is "one trillion, two hundred one billion, two hundred twenty-one million, one hundred eleven thousand, two hundred one".