1201101220221 has 32 divisors (see below), whose sum is σ = 1844844134400. Its totient is φ = 680871635136.

The previous prime is 1201101220093. The next prime is 1201101220261. The reversal of 1201101220221 is 1220221011021.

It is not a de Polignac number, because 1201101220221 - 2⁷ = 1201101220093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201101220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201101220261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40787715 + ... + 40817151.

It is an arithmetic number, because the mean of its divisors is an integer number (57651379200).

Almost surely, 2^{1201101220221} is an apocalyptic number.

It is an amenable number.

1201101220221 is a deficient number, since it is larger than the sum of its proper divisors (643742914179).

1201101220221 is a wasteful number, since it uses less digits than its factorization.

1201101220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44873.

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

Adding to 1201101220221 its reverse (1220221011021), we get a palindrome (2421322231242).

The spelling of 1201101220221 in words is "one trillion, two hundred one billion, one hundred one million, two hundred twenty thousand, two hundred twenty-one".