20100012002021 has 8 divisors (see below), whose sum is σ = 23117757208320. Its totient is φ = 17118845525808.

The previous prime is 20100012001997. The next prime is 20100012002039. The reversal of 20100012002021 is 12020021000102.

It is a happy number.

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 20100012002021 - 2¹⁰ = 20100012000997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100012001993 and 20100012002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100012002041) 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, 9144681341 + ... + 9144683538.

It is an arithmetic number, because the mean of its divisors is an integer number (2889719651040).

Almost surely, 2^{20100012002021} is an apocalyptic number.

It is an amenable number.

20100012002021 is a deficient number, since it is larger than the sum of its proper divisors (3017745206299).

20100012002021 is a wasteful number, since it uses less digits than its factorization.

20100012002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18289365043.

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

Adding to 20100012002021 its reverse (12020021000102), we get a palindrome (32120033002123).

The spelling of 20100012002021 in words is "twenty trillion, one hundred billion, twelve million, two thousand, twenty-one".