121400305171 has 2 divisors, whose sum is σ = 121400305172. Its totient is φ = 121400305170.

The previous prime is 121400305153. The next prime is 121400305177. The reversal of 121400305171 is 171503004121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121400305171 is a prime.

It is a super-2 number, since 2×121400305171² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121400305177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60700152585 + 60700152586.

It is an arithmetic number, because the mean of its divisors is an integer number (60700152586).

Almost surely, 2^121400305171 is an apocalyptic number.

121400305171 is a deficient number, since it is larger than the sum of its proper divisors (1).

121400305171 is an equidigital number, since it uses as much as digits as its factorization.

121400305171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

Adding to 121400305171 its reverse (171503004121), we get a palindrome (292903309292).

The spelling of 121400305171 in words is "one hundred twenty-one billion, four hundred million, three hundred five thousand, one hundred seventy-one".