21013312101001 has 8 divisors (see below), whose sum is σ = 22923860652000. Its totient is φ = 19102804791840.

The previous prime is 21013312100999. The next prime is 21013312101031. The reversal of 21013312101001 is 10010121331012.

It is a happy number.

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

It is not a de Polignac number, because 21013312101001 - 2¹ = 21013312100999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21013312101031) 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, 9240276 + ... + 11287573.

It is an arithmetic number, because the mean of its divisors is an integer number (2865482581500).

Almost surely, 2^{21013312101001} is an apocalyptic number.

It is an amenable number.

21013312101001 is a deficient number, since it is larger than the sum of its proper divisors (1910548550999).

21013312101001 is a wasteful number, since it uses less digits than its factorization.

21013312101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20620919.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21013312101001 its reverse (10010121331012), we get a palindrome (31023433432013).

The spelling of 21013312101001 in words is "twenty-one trillion, thirteen billion, three hundred twelve million, one hundred one thousand, one".