121771201 has 2 divisors, whose sum is σ = 121771202. Its totient is φ = 121771200.

The previous prime is 121771183. The next prime is 121771207. The reversal of 121771201 is 102177121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96530625 + 25240576 = 9825^2 + 5024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121771201 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (121771207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60885600 + 60885601.

It is an arithmetic number, because the mean of its divisors is an integer number (60885601).

Almost surely, 2^121771201 is an apocalyptic number.

It is an amenable number.

121771201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121771201 is an equidigital number, since it uses as much as digits as its factorization.

121771201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 22.

The square root of 121771201 is about 11034.9989125509. The cubic root of 121771201 is about 495.6573262327.

It can be divided in two parts, 12177120 and 1, that added together give a palindrome (12177121).

The spelling of 121771201 in words is "one hundred twenty-one million, seven hundred seventy-one thousand, two hundred one".