121030212089 has 2 divisors, whose sum is σ = 121030212090. Its totient is φ = 121030212088.

The previous prime is 121030212019. The next prime is 121030212133. The reversal of 121030212089 is 980212030121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120362506489 + 667705600 = 346933^2 + 25840^2 .

It is a cyclic number.

It is not a de Polignac number, because 121030212089 - 2²⁰ = 121029163513 is a prime.

It is not a weakly prime, because it can be changed into another prime (121030212019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515106044 + 60515106045.

It is an arithmetic number, because the mean of its divisors is an integer number (60515106045).

Almost surely, 2^121030212089 is an apocalyptic number.

It is an amenable number.

121030212089 is a deficient number, since it is larger than the sum of its proper divisors (1).

121030212089 is an equidigital number, since it uses as much as digits as its factorization.

121030212089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 121030212089 in words is "one hundred twenty-one billion, thirty million, two hundred twelve thousand, eighty-nine".