21010200111001 has 8 divisors (see below), whose sum is σ = 21627544809024. Its totient is φ = 20398707021840.

The previous prime is 21010200110957. The next prime is 21010200111071. The reversal of 21010200111001 is 10011100201012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21010200111001 - 2²⁷ = 21010065893273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010200111071) 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 7 ways as a sum of consecutive naturals, for example, 1462894930 + ... + 1462909291.

It is an arithmetic number, because the mean of its divisors is an integer number (2703443101128).

Almost surely, 2^{21010200111001} is an apocalyptic number.

It is an amenable number.

21010200111001 is a deficient number, since it is larger than the sum of its proper divisors (617344698023).

21010200111001 is a wasteful number, since it uses less digits than its factorization.

21010200111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925804431.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21010200111001 its reverse (10011100201012), we get a palindrome (31021300312013).

The spelling of 21010200111001 in words is "twenty-one trillion, ten billion, two hundred million, one hundred eleven thousand, one".