20000110010021 has 8 divisors (see below), whose sum is σ = 21177045981720. Its totient is φ = 18823225028608.

The previous prime is 20000110010017. The next prime is 20000110010057. The reversal of 20000110010021 is 12001001100002.

It can be written as a sum of positive squares in 4 ways, for example, as 7300187956996 + 12699922053025 = 2701886^2 + 3563695^2 .

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 20000110010021 - 2² = 20000110010017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20000110009990 and 20000110010008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000110013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11938556 + ... + 13510341.

It is an arithmetic number, because the mean of its divisors is an integer number (2647130747715).

Almost surely, 2^{20000110010021} is an apocalyptic number.

It is an amenable number.

20000110010021 is a deficient number, since it is larger than the sum of its proper divisors (1176935971699).

20000110010021 is a wasteful number, since it uses less digits than its factorization.

20000110010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25495143.

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

Adding to 20000110010021 its reverse (12001001100002), we get a palindrome (32001111110023).

The spelling of 20000110010021 in words is "twenty trillion, one hundred ten million, ten thousand, twenty-one".