121120023181 has 2 divisors, whose sum is σ = 121120023182. Its totient is φ = 121120023180.

The previous prime is 121120023163. The next prime is 121120023259. The reversal of 121120023181 is 181320021121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119739529156 + 1380494025 = 346034^2 + 37155^2 .

It is a cyclic number.

It is not a de Polignac number, because 121120023181 - 2⁹ = 121120022669 is a prime.

It is a super-2 number, since 2×121120023181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121120023281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560011590 + 60560011591.

It is an arithmetic number, because the mean of its divisors is an integer number (60560011591).

Almost surely, 2^121120023181 is an apocalyptic number.

It is an amenable number.

121120023181 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120023181 is an equidigital number, since it uses as much as digits as its factorization.

121120023181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The spelling of 121120023181 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-three thousand, one hundred eighty-one".