121220044112677 has 2 divisors, whose sum is σ = 121220044112678. Its totient is φ = 121220044112676.

The previous prime is 121220044112543. The next prime is 121220044112731. The reversal of 121220044112677 is 776211440022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107671357943361 + 13548686169316 = 10376481^2 + 3680854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220044112677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220044112177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610022056338 + 60610022056339.

It is an arithmetic number, because the mean of its divisors is an integer number (60610022056339).

Almost surely, 2^{121220044112677} is an apocalyptic number.

It is an amenable number.

121220044112677 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220044112677 is an equidigital number, since it uses as much as digits as its factorization.

121220044112677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 40.

Adding to 121220044112677 its reverse (776211440022121), we get a palindrome (897431484134798).

The spelling of 121220044112677 in words is "one hundred twenty-one trillion, two hundred twenty billion, forty-four million, one hundred twelve thousand, six hundred seventy-seven".