1222120210001 has 4 divisors (see below), whose sum is σ = 1242154967604. Its totient is φ = 1202085452400.

The previous prime is 1222120209953. The next prime is 1222120210007. The reversal of 1222120210001 is 1000120212221.

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 648580569025 + 573539640976 = 805345^2 + 757324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222120210001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222120210007) 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, 10017378710 + ... + 10017378831.

It is an arithmetic number, because the mean of its divisors is an integer number (310538741901).

Almost surely, 2^{1222120210001} is an apocalyptic number.

It is an amenable number.

1222120210001 is a deficient number, since it is larger than the sum of its proper divisors (20034757603).

1222120210001 is an equidigital number, since it uses as much as digits as its factorization.

1222120210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20034757602.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1222120210001 its reverse (1000120212221), we get a palindrome (2222240422222).

The spelling of 1222120210001 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred ten thousand, one".