21020110010110 has 16 divisors (see below), whose sum is σ = 38054904368256. Its totient is φ = 8359442592928.

The previous prime is 21020110010099. The next prime is 21020110010171. The reversal of 21020110010110 is 1101001102012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6075174574 + ... + 6075178033.

It is an arithmetic number, because the mean of its divisors is an integer number (2378431523016).

Almost surely, 2^{21020110010110} is an apocalyptic number.

21020110010110 is a deficient number, since it is larger than the sum of its proper divisors (17034794358146).

21020110010110 is a wasteful number, since it uses less digits than its factorization.

21020110010110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12150352787.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21020110010110 its reverse (1101001102012), we get a palindrome (22121111112122).

The spelling of 21020110010110 in words is "twenty-one trillion, twenty billion, one hundred ten million, ten thousand, one hundred ten".