20002021200101 has 8 divisors (see below), whose sum is σ = 21082156373880. Its totient is φ = 18947913380032.

The previous prime is 20002021200071. The next prime is 20002021200167. The reversal of 20002021200101 is 10100212020002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2337232497601 + 17664788702500 = 1528801^2 + 4202950^2 .

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 20002021200101 - 2³⁸ = 19727143293157 is a prime.

It is a super-3 number, since 3×20002021200101³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002024200101) 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, 6506836850 + ... + 6506839923.

It is an arithmetic number, because the mean of its divisors is an integer number (2635269546735).

Almost surely, 2^{20002021200101} is an apocalyptic number.

It is an amenable number.

20002021200101 is a deficient number, since it is larger than the sum of its proper divisors (1080135173779).

20002021200101 is a wasteful number, since it uses less digits than its factorization.

20002021200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13013676855.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20002021200101 its reverse (10100212020002), we get a palindrome (30102233220103).

The spelling of 20002021200101 in words is "twenty trillion, two billion, twenty-one million, two hundred thousand, one hundred one".