121110021110 has 32 divisors (see below), whose sum is σ = 235749467520. Its totient is φ = 44530432128.

The previous prime is 121110021101. The next prime is 121110021119. The reversal of 121110021110 is 11120011121.

It is an interprime number because it is at equal distance from previous prime (121110021101) and next prime (121110021119).

It is a junction number, because it is equal to n+sod(n) for n = 121110021091 and 121110021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110021119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1917917 + ... + 1980056.

It is an arithmetic number, because the mean of its divisors is an integer number (7367170860).

Almost surely, 2^121110021110 is an apocalyptic number.

121110021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121110021110 is a deficient number, since it is larger than the sum of its proper divisors (114639446410).

121110021110 is a wasteful number, since it uses less digits than its factorization.

121110021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898232.

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

Adding to 121110021110 its reverse (11120011121), we get a palindrome (132230032231).

The spelling of 121110021110 in words is "one hundred twenty-one billion, one hundred ten million, twenty-one thousand, one hundred ten".