121100201309 has 2 divisors, whose sum is σ = 121100201310. Its totient is φ = 121100201308.

The previous prime is 121100201149. The next prime is 121100201329. The reversal of 121100201309 is 903102001121.

It is an a-pointer prime, because the next prime (121100201329) can be obtained adding 121100201309 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94719295225 + 26380906084 = 307765^2 + 162422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100201309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121100201329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550100654 + 60550100655.

It is an arithmetic number, because the mean of its divisors is an integer number (60550100655).

Almost surely, 2^121100201309 is an apocalyptic number.

It is an amenable number.

121100201309 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100201309 is an equidigital number, since it uses as much as digits as its factorization.

121100201309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 121100201309 in words is "one hundred twenty-one billion, one hundred million, two hundred one thousand, three hundred nine".