21120101210110 has 16 divisors (see below), whose sum is σ = 43447065346656. Its totient is φ = 7241177557728.

The previous prime is 21120101210077. The next prime is 21120101210141. The reversal of 21120101210110 is 1101210102112.

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 7 ways as a sum of consecutive naturals, for example, 150857865717 + ... + 150857865856.

It is an arithmetic number, because the mean of its divisors is an integer number (2715441584166).

Almost surely, 2^{21120101210110} is an apocalyptic number.

21120101210110 is an abundant number, since it is smaller than the sum of its proper divisors (22326964136546).

21120101210110 is a wasteful number, since it uses less digits than its factorization.

21120101210110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301715731587.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21120101210110 its reverse (1101210102112), we get a palindrome (22221311312222).

The spelling of 21120101210110 in words is "twenty-one trillion, one hundred twenty billion, one hundred one million, two hundred ten thousand, one hundred ten".