21020122202110 has 64 divisors (see below), whose sum is σ = 38155001985792. Its totient is φ = 8337528815616.

The previous prime is 21020122202063. The next prime is 21020122202141. The reversal of 21020122202110 is 1120222102012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 873025392 + ... + 873049468.

It is an arithmetic number, because the mean of its divisors is an integer number (596171906028).

Almost surely, 2^{21020122202110} is an apocalyptic number.

21020122202110 is a deficient number, since it is larger than the sum of its proper divisors (17134879783682).

21020122202110 is a wasteful number, since it uses less digits than its factorization.

21020122202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25717.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21020122202110 its reverse (1120222102012), we get a palindrome (22140344304122).

The spelling of 21020122202110 in words is "twenty-one trillion, twenty billion, one hundred twenty-two million, two hundred two thousand, one hundred ten".