121392605801 has 2 divisors, whose sum is σ = 121392605802. Its totient is φ = 121392605800.

The previous prime is 121392605681. The next prime is 121392605879. The reversal of 121392605801 is 108506293121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65022450025 + 56370155776 = 254995^2 + 237424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121392605801 is a prime.

It is not a weakly prime, because it can be changed into another prime (121392605881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60696302900 + 60696302901.

It is an arithmetic number, because the mean of its divisors is an integer number (60696302901).

Almost surely, 2^121392605801 is an apocalyptic number.

It is an amenable number.

121392605801 is a deficient number, since it is larger than the sum of its proper divisors (1).

121392605801 is an equidigital number, since it uses as much as digits as its factorization.

121392605801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

Adding to 121392605801 its reverse (108506293121), we get a palindrome (229898898922).

The spelling of 121392605801 in words is "one hundred twenty-one billion, three hundred ninety-two million, six hundred five thousand, eight hundred one".