101000022001001 has 4 divisors (see below), whose sum is σ = 101000268441600. Its totient is φ = 100999775560404.

The previous prime is 101000022000991. The next prime is 101000022001031. The reversal of 101000022001001 is 100100220000101.

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 101000022001001 - 2¹⁰ = 101000021999977 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 101000022001001.

It is not an unprimeable number, because it can be changed into a prime (101000022001031) 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, 122604521 + ... + 123425558.

It is an arithmetic number, because the mean of its divisors is an integer number (25250067110400).

Almost surely, 2^{101000022001001} is an apocalyptic number.

It is an amenable number.

101000022001001 is a deficient number, since it is larger than the sum of its proper divisors (246440599).

101000022001001 is an equidigital number, since it uses as much as digits as its factorization.

101000022001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246440598.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101000022001001 its reverse (100100220000101), we get a palindrome (201100242001102).

The spelling of 101000022001001 in words is "one hundred one trillion, twenty-two million, one thousand, one".