21200211001001 has 8 divisors (see below), whose sum is σ = 22595939737344. Its totient is φ = 19820999764800.

The previous prime is 21200211000949. The next prime is 21200211001009. The reversal of 21200211001001 is 10010011200212.

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 21200211001001 - 2²² = 21200206806697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200211001009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129372385 + ... + 4129377518.

It is an arithmetic number, because the mean of its divisors is an integer number (2824492467168).

Almost surely, 2^{21200211001001} is an apocalyptic number.

It is an amenable number.

21200211001001 is a deficient number, since it is larger than the sum of its proper divisors (1395728736343).

21200211001001 is a wasteful number, since it uses less digits than its factorization.

21200211001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8258750071.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21200211001001 its reverse (10010011200212), we get a palindrome (31210222201213).

The spelling of 21200211001001 in words is "twenty-one trillion, two hundred billion, two hundred eleven million, one thousand, one".