1001121022101 has 4 divisors (see below), whose sum is σ = 1334828029472. Its totient is φ = 667414014732.

The previous prime is 1001121022049. The next prime is 1001121022133. The reversal of 1001121022101 is 1012201211001.

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 not a de Polignac number, because 1001121022101 - 2¹⁰ = 1001121021077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001121022141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166853503681 + ... + 166853503686.

It is an arithmetic number, because the mean of its divisors is an integer number (333707007368).

Almost surely, 2^{1001121022101} is an apocalyptic number.

It is an amenable number.

1001121022101 is a deficient number, since it is larger than the sum of its proper divisors (333707007371).

1001121022101 is an equidigital number, since it uses as much as digits as its factorization.

1001121022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333707007370.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001121022101 its reverse (1012201211001), we get a palindrome (2013322233102).

The spelling of 1001121022101 in words is "one trillion, one billion, one hundred twenty-one million, twenty-two thousand, one hundred one".