21200432001401 has 8 divisors (see below), whose sum is σ = 21884384491008. Its totient is φ = 20516483736000.

The previous prime is 21200432001379. The next prime is 21200432001449. The reversal of 21200432001401 is 10410023400212.

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

It is a de Polignac number, because none of the positive numbers 2^k-21200432001401 is a prime.

It is a super-2 number, since 2×21200432001401² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200432001101) 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, 11521316 + ... + 13234106.

It is an arithmetic number, because the mean of its divisors is an integer number (2735548061376).

Almost surely, 2^{21200432001401} is an apocalyptic number.

It is an amenable number.

21200432001401 is a deficient number, since it is larger than the sum of its proper divisors (683952489607).

21200432001401 is a wasteful number, since it uses less digits than its factorization.

21200432001401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112103.

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

Adding to 21200432001401 its reverse (10410023400212), we get a palindrome (31610455401613).

The spelling of 21200432001401 in words is "twenty-one trillion, two hundred billion, four hundred thirty-two million, one thousand, four hundred one".