1001222010001 has 4 divisors (see below), whose sum is σ = 1060117422372. Its totient is φ = 942326597632.

The previous prime is 1001222009999. The next prime is 1001222010011. The reversal of 1001222010001 is 1000102221001.

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 871945088400 + 129276921601 = 933780^2 + 359551^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001222010001 - 2¹ = 1001222009999 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 1001222010001.

It is not an unprimeable number, because it can be changed into a prime (1001222010011) 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, 29447706160 + ... + 29447706193.

It is an arithmetic number, because the mean of its divisors is an integer number (265029355593).

Almost surely, 2^{1001222010001} is an apocalyptic number.

It is an amenable number.

1001222010001 is a deficient number, since it is larger than the sum of its proper divisors (58895412371).

1001222010001 is an equidigital number, since it uses as much as digits as its factorization.

1001222010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58895412370.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001222010001 its reverse (1000102221001), we get a palindrome (2001324231002).

The spelling of 1001222010001 in words is "one trillion, one billion, two hundred twenty-two million, ten thousand, one".