121210110110 has 32 divisors (see below), whose sum is σ = 223286624352. Its totient is φ = 47349187200.

The previous prime is 121210110083. The next prime is 121210110113. The reversal of 121210110110 is 11011012121.

It is a junction number, because it is equal to n+sod(n) for n = 121210110091 and 121210110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210110113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3379592 + ... + 3415268.

It is an arithmetic number, because the mean of its divisors is an integer number (6977707011).

Almost surely, 2^121210110110 is an apocalyptic number.

121210110110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210110110 is a deficient number, since it is larger than the sum of its proper divisors (102076514242).

121210110110 is a wasteful number, since it uses less digits than its factorization.

121210110110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43628.

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

Adding to 121210110110 its reverse (11011012121), we get a palindrome (132221122231).

The spelling of 121210110110 in words is "one hundred twenty-one billion, two hundred ten million, one hundred ten thousand, one hundred ten".