121434644077 has 2 divisors, whose sum is σ = 121434644078. Its totient is φ = 121434644076.

The previous prime is 121434644053. The next prime is 121434644099. The reversal of 121434644077 is 770446434121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72482639076 + 48952005001 = 269226^2 + 221251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121434644077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121434644377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60717322038 + 60717322039.

It is an arithmetic number, because the mean of its divisors is an integer number (60717322039).

Almost surely, 2^121434644077 is an apocalyptic number.

It is an amenable number.

121434644077 is a deficient number, since it is larger than the sum of its proper divisors (1).

121434644077 is an equidigital number, since it uses as much as digits as its factorization.

121434644077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 43.

The spelling of 121434644077 in words is "one hundred twenty-one billion, four hundred thirty-four million, six hundred forty-four thousand, seventy-seven".