121212010110 has 64 divisors (see below), whose sum is σ = 297713180160. Its totient is φ = 31575519360.

The previous prime is 121212010099. The next prime is 121212010111. The reversal of 121212010110 is 11010212121.

121212010110 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212010111) 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, 28872 + ... + 493211.

It is an arithmetic number, because the mean of its divisors is an integer number (4651768440).

Almost surely, 2^121212010110 is an apocalyptic number.

121212010110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121212010110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148856590080).

121212010110 is an abundant number, since it is smaller than the sum of its proper divisors (176501170050).

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

121212010110 is a wasteful number, since it uses less digits than its factorization.

121212010110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522273.

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

Adding to 121212010110 its reverse (11010212121), we get a palindrome (132222222231).

The spelling of 121212010110 in words is "one hundred twenty-one billion, two hundred twelve million, ten thousand, one hundred ten".