121001320110 has 96 divisors (see below), whose sum is σ = 326989335456. Its totient is φ = 28618163200.

The previous prime is 121001320093. The next prime is 121001320117. The reversal of 121001320110 is 11023100121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001320117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 257679 + ... + 555338.

It is an arithmetic number, because the mean of its divisors is an integer number (3406138911).

Almost surely, 2^121001320110 is an apocalyptic number.

121001320110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121001320110 is an abundant number, since it is smaller than the sum of its proper divisors (205988015346).

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

121001320110 is a wasteful number, since it uses less digits than its factorization.

121001320110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813090 (or 813079 counting only the distinct ones).

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

Adding to 121001320110 its reverse (11023100121), we get a palindrome (132024420231).

The spelling of 121001320110 in words is "one hundred twenty-one billion, one million, three hundred twenty thousand, one hundred ten".