21010020002110 has 32 divisors (see below), whose sum is σ = 37840617047520. Its totient is φ = 8398990559232.

The previous prime is 21010020002107. The next prime is 21010020002117. The reversal of 21010020002110 is 1120002001012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010020002117) 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, 489300562 + ... + 489343498.

It is an arithmetic number, because the mean of its divisors is an integer number (1182519282735).

Almost surely, 2^{21010020002110} is an apocalyptic number.

21010020002110 is a deficient number, since it is larger than the sum of its proper divisors (16830597045410).

21010020002110 is a wasteful number, since it uses less digits than its factorization.

21010020002110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71020.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21010020002110 its reverse (1120002001012), we get a palindrome (22130022003122).

The spelling of 21010020002110 in words is "twenty-one trillion, ten billion, twenty million, two thousand, one hundred ten".