1201222220201 has 8 divisors (see below), whose sum is σ = 1242678213000. Its totient is φ = 1159768529920.

The previous prime is 1201222220153. The next prime is 1201222220221. The reversal of 1201222220201 is 1020222221021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 461448490000 + 739773730201 = 679300^2 + 860101^2 .

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 1201222220201 - 2¹⁰ = 1201222219177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201222220201.

It is not an unprimeable number, because it can be changed into a prime (1201222220221) 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 7 ways as a sum of consecutive naturals, for example, 521225 + ... + 1635273.

It is an arithmetic number, because the mean of its divisors is an integer number (155334776625).

Almost surely, 2^{1201222220201} is an apocalyptic number.

It is an amenable number.

1201222220201 is a deficient number, since it is larger than the sum of its proper divisors (41455992799).

1201222220201 is a wasteful number, since it uses less digits than its factorization.

1201222220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151259.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1201222220201 its reverse (1020222221021), we get a palindrome (2221444441222).

The spelling of 1201222220201 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred one".