21100402403201 has 16 divisors (see below), whose sum is σ = 24319012458240. Its totient is φ = 18126671297280.

The previous prime is 21100402403167. The next prime is 21100402403203. The reversal of 21100402403201 is 10230420400112.

It is a cyclic number.

It is not a de Polignac number, because 21100402403201 - 2¹⁸ = 21100402141057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100402403203) 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 15 ways as a sum of consecutive naturals, for example, 703660136 + ... + 703690121.

It is an arithmetic number, because the mean of its divisors is an integer number (1519938278640).

Almost surely, 2^{21100402403201} is an apocalyptic number.

It is an amenable number.

21100402403201 is a deficient number, since it is larger than the sum of its proper divisors (3218610055039).

21100402403201 is a wasteful number, since it uses less digits than its factorization.

21100402403201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407350344.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21100402403201 its reverse (10230420400112), we get a palindrome (31330822803313).

The spelling of 21100402403201 in words is "twenty-one trillion, one hundred billion, four hundred two million, four hundred three thousand, two hundred one".