22221202212001 has 4 divisors (see below), whose sum is σ = 23930525459092. Its totient is φ = 20511878964912.

The previous prime is 22221202211983. The next prime is 22221202212017. The reversal of 22221202212001 is 10021220212222.

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 9451843128225 + 12769359083776 = 3074385^2 + 3573424^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221202212001 - 2⁹ = 22221202211489 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 22221202212001.

It is not an unprimeable number, because it can be changed into a prime (22221202222001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854661623526 + ... + 854661623551.

It is an arithmetic number, because the mean of its divisors is an integer number (5982631364773).

Almost surely, 2^{22221202212001} is an apocalyptic number.

It is an amenable number.

22221202212001 is a deficient number, since it is larger than the sum of its proper divisors (1709323247091).

22221202212001 is a wasteful number, since it uses less digits than its factorization.

22221202212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709323247090.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22221202212001 its reverse (10021220212222), we get a palindrome (32242422424223).

The spelling of 22221202212001 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, two hundred twelve thousand, one".