121121112071 has 2 divisors, whose sum is σ = 121121112072. Its totient is φ = 121121112070.

The previous prime is 121121112023. The next prime is 121121112103. The reversal of 121121112071 is 170211121121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121121112071 - 2¹⁰ = 121121111047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121112271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560556035 + 60560556036.

It is an arithmetic number, because the mean of its divisors is an integer number (60560556036).

Almost surely, 2^121121112071 is an apocalyptic number.

121121112071 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121112071 is an equidigital number, since it uses as much as digits as its factorization.

121121112071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 121121112071 its reverse (170211121121), we get a palindrome (291332233192).

The spelling of 121121112071 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, seventy-one".