101000020021001 has 16 divisors (see below), whose sum is σ = 106981456095360. Its totient is φ = 95188083083520.

The previous prime is 101000020020979. The next prime is 101000020021003. The reversal of 101000020021001 is 100120020000101.

It is a cyclic number.

It is not a de Polignac number, because 101000020021001 - 2⁶ = 101000020020937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101000020021001.

It is not an unprimeable number, because it can be changed into a prime (101000020021003) 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, 24140165 + ... + 28013346.

It is an arithmetic number, because the mean of its divisors is an integer number (6686341005960).

Almost surely, 2^{101000020021001} is an apocalyptic number.

It is an amenable number.

101000020021001 is a deficient number, since it is larger than the sum of its proper divisors (5981436074359).

101000020021001 is a wasteful number, since it uses less digits than its factorization.

101000020021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52155136.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101000020021001 its reverse (100120020000101), we get a palindrome (201120040021102).

The spelling of 101000020021001 in words is "one hundred one trillion, twenty million, twenty-one thousand, one".