101212121110 has 32 divisors (see below), whose sum is σ = 184812969600. Its totient is φ = 39901954560.

The previous prime is 101212121107. The next prime is 101212121119. The reversal of 101212121110 is 11121212101.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212121119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336930 + ... + 562090.

It is an arithmetic number, because the mean of its divisors is an integer number (5775405300).

Almost surely, 2^101212121110 is an apocalyptic number.

101212121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101212121110 is a deficient number, since it is larger than the sum of its proper divisors (83600848490).

101212121110 is a wasteful number, since it uses less digits than its factorization.

101212121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225816.

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

Adding to 101212121110 its reverse (11121212101), we get a palindrome (112333333211).

Subtracting from 101212121110 its reverse (11121212101), we obtain a palindrome (90090909009).

The spelling of 101212121110 in words is "one hundred one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ten".