2211223331201 has 4 divisors (see below), whose sum is σ = 2211371184852. Its totient is φ = 2211075477552.

The previous prime is 2211223331189. The next prime is 2211223331267. The reversal of 2211223331201 is 1021333221122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 483052800400 + 1728170530801 = 695020^2 + 1314599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211223331201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211223331701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73904390 + ... + 73934303.

It is an arithmetic number, because the mean of its divisors is an integer number (552842796213).

Almost surely, 2^{2211223331201} is an apocalyptic number.

It is an amenable number.

2211223331201 is a deficient number, since it is larger than the sum of its proper divisors (147853651).

2211223331201 is a wasteful number, since it uses less digits than its factorization.

2211223331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147853650.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2211223331201 its reverse (1021333221122), we get a palindrome (3232556552323).

The spelling of 2211223331201 in words is "two trillion, two hundred eleven billion, two hundred twenty-three million, three hundred thirty-one thousand, two hundred one".