121123669841 has 2 divisors, whose sum is σ = 121123669842. Its totient is φ = 121123669840.

The previous prime is 121123669811. The next prime is 121123669847. The reversal of 121123669841 is 148966321121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119163040000 + 1960629841 = 345200^2 + 44279^2 .

It is a cyclic number.

It is not a de Polignac number, because 121123669841 - 2²² = 121119475537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121123669792 and 121123669801.

It is not a weakly prime, because it can be changed into another prime (121123669847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561834920 + 60561834921.

It is an arithmetic number, because the mean of its divisors is an integer number (60561834921).

Almost surely, 2^121123669841 is an apocalyptic number.

It is an amenable number.

121123669841 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123669841 is an equidigital number, since it uses as much as digits as its factorization.

121123669841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The spelling of 121123669841 in words is "one hundred twenty-one billion, one hundred twenty-three million, six hundred sixty-nine thousand, eight hundred forty-one".