2122221111001 has 8 divisors (see below), whose sum is σ = 2252025351360. Its totient is φ = 1995544683792.

The previous prime is 2122221110983. The next prime is 2122221111007. The reversal of 2122221111001 is 1001111222212.

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 2122221111001 - 2⁹ = 2122221110489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122221111007) 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, 781951890 + ... + 781954603.

It is an arithmetic number, because the mean of its divisors is an integer number (281503168920).

Almost surely, 2^{2122221111001} is an apocalyptic number.

It is an amenable number.

2122221111001 is a deficient number, since it is larger than the sum of its proper divisors (129804240359).

2122221111001 is a wasteful number, since it uses less digits than its factorization.

2122221111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563906575.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2122221111001 its reverse (1001111222212), we get a palindrome (3123332333213).

It can be divided in two parts, 21222211 and 11001, that added together give a palindrome (21233212).

The spelling of 2122221111001 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one".