2001100351421 has 4 divisors (see below), whose sum is σ = 2002617487200. Its totient is φ = 1999583215644.

The previous prime is 2001100351403. The next prime is 2001100351429. The reversal of 2001100351421 is 1241530011002.

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 2001100351421 - 2⁶ = 2001100351357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001100351393 and 2001100351402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001100351429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758565911 + ... + 758568548.

It is an arithmetic number, because the mean of its divisors is an integer number (500654371800).

Almost surely, 2^{2001100351421} is an apocalyptic number.

It is an amenable number.

2001100351421 is a deficient number, since it is larger than the sum of its proper divisors (1517135779).

2001100351421 is a wasteful number, since it uses less digits than its factorization.

2001100351421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517135778.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 2001100351421 its reverse (1241530011002), we get a palindrome (3242630362423).

The spelling of 2001100351421 in words is "two trillion, one billion, one hundred million, three hundred fifty-one thousand, four hundred twenty-one".