121330110101 has 4 divisors (see below), whose sum is σ = 121365089100. Its totient is φ = 121295131104.

The previous prime is 121330110043. The next prime is 121330110103. The reversal of 121330110101 is 101011033121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33876243025 + 87453867076 = 184055^2 + 295726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121330110101 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 (121330110103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17484296 + ... + 17491233.

It is an arithmetic number, because the mean of its divisors is an integer number (30341272275).

Almost surely, 2^121330110101 is an apocalyptic number.

It is an amenable number.

121330110101 is a deficient number, since it is larger than the sum of its proper divisors (34978999).

121330110101 is an equidigital number, since it uses as much as digits as its factorization.

121330110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34978998.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 121330110101 its reverse (101011033121), we get a palindrome (222341143222).

The spelling of 121330110101 in words is "one hundred twenty-one billion, three hundred thirty million, one hundred ten thousand, one hundred one".