22221121210001 has 8 divisors (see below), whose sum is σ = 25527150347904. Its totient is φ = 18947987884800.

The previous prime is 22221121209979. The next prime is 22221121210031. The reversal of 22221121210001 is 10001212112222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221121210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221121210031) 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 7 ways as a sum of consecutive naturals, for example, 8223951725 + ... + 8223954426.

It is an arithmetic number, because the mean of its divisors is an integer number (3190893793488).

Almost surely, 2^{22221121210001} is an apocalyptic number.

It is an amenable number.

22221121210001 is a deficient number, since it is larger than the sum of its proper divisors (3306029137903).

22221121210001 is a wasteful number, since it uses less digits than its factorization.

22221121210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16447906351.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22221121210001 its reverse (10001212112222), we get a palindrome (32222333322223).

The spelling of 22221121210001 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred ten thousand, one".