1001222120101 has 4 divisors (see below), whose sum is σ = 1144253851552. Its totient is φ = 858190388652.

The previous prime is 1001222120089. The next prime is 1001222120131. The reversal of 1001222120101 is 1010212221001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1001222120101 - 2⁷ = 1001222119973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001222120131) 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, 71515865715 + ... + 71515865728.

It is an arithmetic number, because the mean of its divisors is an integer number (286063462888).

Almost surely, 2^{1001222120101} is an apocalyptic number.

It is an amenable number.

1001222120101 is a deficient number, since it is larger than the sum of its proper divisors (143031731451).

1001222120101 is an equidigital number, since it uses as much as digits as its factorization.

1001222120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143031731450.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001222120101 its reverse (1010212221001), we get a palindrome (2011434341102).

The spelling of 1001222120101 in words is "one trillion, one billion, two hundred twenty-two million, one hundred twenty thousand, one hundred one".