121102020110 has 16 divisors (see below), whose sum is σ = 218189106432. Its totient is φ = 48395148000.

The previous prime is 121102020103. The next prime is 121102020113. The reversal of 121102020110 is 11020201121.

It is a junction number, because it is equal to n+sod(n) for n = 121102020091 and 121102020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102020113) 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, 5696366 + ... + 5717585.

It is an arithmetic number, because the mean of its divisors is an integer number (13636819152).

Almost surely, 2^121102020110 is an apocalyptic number.

121102020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121102020110 is a deficient number, since it is larger than the sum of its proper divisors (97087086322).

121102020110 is a wasteful number, since it uses less digits than its factorization.

121102020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11415019.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121102020110 its reverse (11020201121), we get a palindrome (132122221231).

The spelling of 121102020110 in words is "one hundred twenty-one billion, one hundred two million, twenty thousand, one hundred ten".