121121010110 has 16 divisors (see below), whose sum is σ = 218061072432. Its totient is φ = 48438792000.

The previous prime is 121121010103. The next prime is 121121010113. The reversal of 121121010110 is 11010121121.

It is a super-3 number, since 3×121121010110³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121121010091 and 121121010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121010113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1148471 + ... + 1249490.

It is an arithmetic number, because the mean of its divisors is an integer number (13628817027).

Almost surely, 2^121121010110 is an apocalyptic number.

121121010110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121010110 is a deficient number, since it is larger than the sum of its proper divisors (96940062322).

121121010110 is a wasteful number, since it uses less digits than its factorization.

121121010110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403019.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121121010110 its reverse (11010121121), we get a palindrome (132131131231).

The spelling of 121121010110 in words is "one hundred twenty-one billion, one hundred twenty-one million, ten thousand, one hundred ten".