121123313101 has 12 divisors (see below), whose sum is σ = 145757120220. Its totient is φ = 100239982080.

The previous prime is 121123313089. The next prime is 121123313117. The reversal of 121123313101 is 101313321121.

It can be written as a sum of positive squares in 2 ways, for example, as 59085455625 + 62037857476 = 243075^2 + 249074^2 .

It is a de Polignac number, because none of the positive numbers 2^k-121123313101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123313131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42617620 + ... + 42620461.

It is an arithmetic number, because the mean of its divisors is an integer number (12146426685).

Almost surely, 2^121123313101 is an apocalyptic number.

It is an amenable number.

121123313101 is a deficient number, since it is larger than the sum of its proper divisors (24633807119).

121123313101 is an equidigital number, since it uses as much as digits as its factorization.

121123313101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85238124 (or 85238117 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121123313101 its reverse (101313321121), we get a palindrome (222436634222).

The spelling of 121123313101 in words is "one hundred twenty-one billion, one hundred twenty-three million, three hundred thirteen thousand, one hundred one".