21210011211110 has 32 divisors (see below), whose sum is σ = 38236860672192. Its totient is φ = 8470932687360.

The previous prime is 21210011211047. The next prime is 21210011211149. The reversal of 21210011211110 is 1111211001212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44261354 + ... + 44737986.

It is an arithmetic number, because the mean of its divisors is an integer number (1194901896006).

Almost surely, 2^{21210011211110} is an apocalyptic number.

21210011211110 is a deficient number, since it is larger than the sum of its proper divisors (17026849461082).

21210011211110 is a wasteful number, since it uses less digits than its factorization.

21210011211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483488.

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

Adding to 21210011211110 its reverse (1111211001212), we get a palindrome (22321222212322).

The spelling of 21210011211110 in words is "twenty-one trillion, two hundred ten billion, eleven million, two hundred eleven thousand, one hundred ten".