2021321100001 has 16 divisors (see below), whose sum is σ = 2443540402944. Its totient is φ = 1634530385664.

The previous prime is 2021321099977. The next prime is 2021321100031. The reversal of 2021321100001 is 1000011231202.

It is a cyclic number.

It is not a de Polignac number, because 2021321100001 - 2¹³ = 2021321091809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021321100031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85979956 + ... + 86003461.

It is an arithmetic number, because the mean of its divisors is an integer number (152721275184).

Almost surely, 2^{2021321100001} is an apocalyptic number.

It is an amenable number.

2021321100001 is a deficient number, since it is larger than the sum of its proper divisors (422219302943).

2021321100001 is a wasteful number, since it uses less digits than its factorization.

2021321100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171983520.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2021321100001 its reverse (1000011231202), we get a palindrome (3021332331203).

The spelling of 2021321100001 in words is "two trillion, twenty-one billion, three hundred twenty-one million, one hundred thousand, one".