21010121211110 has 8 divisors (see below), whose sum is σ = 37818218180016. Its totient is φ = 8404048484440.

The previous prime is 21010121211109. The next prime is 21010121211133. The reversal of 21010121211110 is 1111212101012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050506060546 + ... + 1050506060565.

It is an arithmetic number, because the mean of its divisors is an integer number (4727277272502).

Almost surely, 2^{21010121211110} is an apocalyptic number.

21010121211110 is a deficient number, since it is larger than the sum of its proper divisors (16808096968906).

21010121211110 is a wasteful number, since it uses less digits than its factorization.

21010121211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101012121118.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21010121211110 its reverse (1111212101012), we get a palindrome (22121333312122).

The spelling of 21010121211110 in words is "twenty-one trillion, ten billion, one hundred twenty-one million, two hundred eleven thousand, one hundred ten".