20102021100001 has 16 divisors (see below), whose sum is σ = 20730746486016. Its totient is φ = 19480325040000.

The previous prime is 20102021099903. The next prime is 20102021100011. The reversal of 20102021100001 is 10000112020102.

It is a cyclic number.

It is not a de Polignac number, because 20102021100001 - 2⁷ = 20102021099873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102021100011) 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, 944811 + ... + 6410671.

It is an arithmetic number, because the mean of its divisors is an integer number (1295671655376).

Almost surely, 2^{20102021100001} is an apocalyptic number.

It is an amenable number.

20102021100001 is a deficient number, since it is larger than the sum of its proper divisors (628725386015).

20102021100001 is a wasteful number, since it uses less digits than its factorization.

20102021100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466504.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20102021100001 its reverse (10000112020102), we get a palindrome (30102133120103).

The spelling of 20102021100001 in words is "twenty trillion, one hundred two billion, twenty-one million, one hundred thousand, one".