121131101020110 has 64 divisors (see below), whose sum is σ = 303547508605440. Its totient is φ = 30877540876160.

The previous prime is 121131101020103. The next prime is 121131101020121. The reversal of 121131101020110 is 11020101131121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121131101020110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54788805 + ... + 56956784.

It is an arithmetic number, because the mean of its divisors is an integer number (4742929821960).

Almost surely, 2^{121131101020110} is an apocalyptic number.

121131101020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121131101020110 is an abundant number, since it is smaller than the sum of its proper divisors (182416407585330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121131101020110 is a wasteful number, since it uses less digits than its factorization.

121131101020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111747193.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 121131101020110 its reverse (11020101131121), we get a palindrome (132151202151231).

The spelling of 121131101020110 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, one hundred one million, twenty thousand, one hundred ten".