122307221 has 2 divisors, whose sum is σ = 122307222. Its totient is φ = 122307220.

The previous prime is 122307209. The next prime is 122307277. The reversal of 122307221 is 122703221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71740900 + 50566321 = 8470^2 + 7111^2 .

It is an emirp because it is prime and its reverse (122703221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122307221 - 2²⁶ = 55198357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122307193 and 122307202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122307421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61153610 + 61153611.

It is an arithmetic number, because the mean of its divisors is an integer number (61153611).

Almost surely, 2^122307221 is an apocalyptic number.

It is an amenable number.

122307221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122307221 is an equidigital number, since it uses as much as digits as its factorization.

122307221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 122307221 is about 11059.2595140904. The cubic root of 122307221 is about 496.3835334043.

The spelling of 122307221 in words is "one hundred twenty-two million, three hundred seven thousand, two hundred twenty-one".