121735255219 has 2 divisors, whose sum is σ = 121735255220. Its totient is φ = 121735255218.

The previous prime is 121735255177. The next prime is 121735255253. The reversal of 121735255219 is 912552537121.

It is a strong prime.

It is an emirp because it is prime and its reverse (912552537121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121735255219 - 2¹³ = 121735247027 is a prime.

It is a super-2 number, since 2×121735255219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121735255619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60867627609 + 60867627610.

It is an arithmetic number, because the mean of its divisors is an integer number (60867627610).

Almost surely, 2^121735255219 is an apocalyptic number.

121735255219 is a deficient number, since it is larger than the sum of its proper divisors (1).

121735255219 is an equidigital number, since it uses as much as digits as its factorization.

121735255219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 43.

The spelling of 121735255219 in words is "one hundred twenty-one billion, seven hundred thirty-five million, two hundred fifty-five thousand, two hundred nineteen".