121220520301 has 2 divisors, whose sum is σ = 121220520302. Its totient is φ = 121220520300.

The previous prime is 121220520287. The next prime is 121220520307. The reversal of 121220520301 is 103025022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120512428201 + 708092100 = 347149^2 + 26610^2 .

It is a cyclic number.

It is not a de Polignac number, because 121220520301 - 2²¹ = 121218423149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220520307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610260150 + 60610260151.

It is an arithmetic number, because the mean of its divisors is an integer number (60610260151).

Almost surely, 2^121220520301 is an apocalyptic number.

It is an amenable number.

121220520301 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220520301 is an equidigital number, since it uses as much as digits as its factorization.

121220520301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 121220520301 its reverse (103025022121), we get a palindrome (224245542422).

The spelling of 121220520301 in words is "one hundred twenty-one billion, two hundred twenty million, five hundred twenty thousand, three hundred one".