21210010120110 has 96 divisors (see below), whose sum is σ = 59475744858240. Its totient is φ = 4826645398848.

The previous prime is 21210010120093. The next prime is 21210010120129. The reversal of 21210010120110 is 1102101001212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31447320 + ... + 32114699.

It is an arithmetic number, because the mean of its divisors is an integer number (619539008940).

Almost surely, 2^{21210010120110} is an apocalyptic number.

21210010120110 is an abundant number, since it is smaller than the sum of its proper divisors (38265734738130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21210010120110 is a wasteful number, since it uses less digits than its factorization.

21210010120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63562270 (or 63562263 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21210010120110 its reverse (1102101001212), we get a palindrome (22312111121322).

The spelling of 21210010120110 in words is "twenty-one trillion, two hundred ten billion, ten million, one hundred twenty thousand, one hundred ten".