2122222120001 has 4 divisors (see below), whose sum is σ = 2122278640212. Its totient is φ = 2122165599792.

The previous prime is 2122222119973. The next prime is 2122222120021. The reversal of 2122222120001 is 1000212222212.

It is a happy number.

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 1685894496400 + 436327623601 = 1298420^2 + 660551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122222120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122222120021) 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, 28203746 + ... + 28278891.

It is an arithmetic number, because the mean of its divisors is an integer number (530569660053).

Almost surely, 2^{2122222120001} is an apocalyptic number.

It is an amenable number.

2122222120001 is a deficient number, since it is larger than the sum of its proper divisors (56520211).

2122222120001 is an equidigital number, since it uses as much as digits as its factorization.

2122222120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56520210.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2122222120001 its reverse (1000212222212), we get a palindrome (3122434342213).

The spelling of 2122222120001 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, one".