210121220012110 has 64 divisors (see below), whose sum is σ = 417298146978240. Its totient is φ = 75541065937920.

The previous prime is 210121220012059. The next prime is 210121220012111. The reversal of 210121220012110 is 11210022121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121220012111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13694209 + ... + 24653068.

It is an arithmetic number, because the mean of its divisors is an integer number (6520283546535).

Almost surely, 2^{210121220012110} is an apocalyptic number.

210121220012110 is a deficient number, since it is larger than the sum of its proper divisors (207176926966130).

210121220012110 is a wasteful number, since it uses less digits than its factorization.

210121220012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38347861.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210121220012110 its reverse (11210022121012), we get a palindrome (221331242133122).

The spelling of 210121220012110 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred twenty million, twelve thousand, one hundred ten".