20102841021063 has 4 divisors (see below), whose sum is σ = 26803788028088. Its totient is φ = 13401894014040.

The previous prime is 20102841021019. The next prime is 20102841021079. The reversal of 20102841021063 is 36012014820102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20102841021063 - 2¹² = 20102841016967 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 20102841021063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102841021563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350473503508 + ... + 3350473503513.

It is an arithmetic number, because the mean of its divisors is an integer number (6700947007022).

Almost surely, 2^{20102841021063} is an apocalyptic number.

20102841021063 is a deficient number, since it is larger than the sum of its proper divisors (6700947007025).

20102841021063 is an equidigital number, since it uses as much as digits as its factorization.

20102841021063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700947007024.

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 20102841021063 its reverse (36012014820102), we get a palindrome (56114855841165).

The spelling of 20102841021063 in words is "twenty trillion, one hundred two billion, eight hundred forty-one million, twenty-one thousand, sixty-three".