22121202201201 has 6 divisors (see below), whose sum is σ = 31952847623970. Its totient is φ = 14747468134128.

The previous prime is 22121202201199. The next prime is 22121202201233. The reversal of 22121202201201 is 10210220212122.

It is a happy number.

22121202201201 is a `hidden beast` number, since 221 + 2 + 1 + 20 + 220 + 1 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13436982591201 + 8684219610000 = 3665649^2 + 2946900^2 .

It is not a de Polignac number, because 22121202201201 - 2¹ = 22121202201199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121202201401) 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 5 ways as a sum of consecutive naturals, for example, 1228955677836 + ... + 1228955677853.

It is an arithmetic number, because the mean of its divisors is an integer number (5325474603995).

Almost surely, 2^{22121202201201} is an apocalyptic number.

It is an amenable number.

22121202201201 is a deficient number, since it is larger than the sum of its proper divisors (9831645422769).

22121202201201 is a wasteful number, since it uses less digits than its factorization.

22121202201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457911355695 (or 2457911355692 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22121202201201 its reverse (10210220212122), we get a palindrome (32331422413323).

The spelling of 22121202201201 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred two million, two hundred one thousand, two hundred one".