242221061 has 2 divisors, whose sum is σ = 242221062. Its totient is φ = 242221060.

The previous prime is 242221051. The next prime is 242221099. The reversal of 242221061 is 160122242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184552225 + 57668836 = 13585^2 + 7594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242221061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242221051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121110530 + 121110531.

It is an arithmetic number, because the mean of its divisors is an integer number (121110531).

Almost surely, 2^242221061 is an apocalyptic number.

It is an amenable number.

242221061 is a deficient number, since it is larger than the sum of its proper divisors (1).

242221061 is an equidigital number, since it uses as much as digits as its factorization.

242221061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 242221061 is about 15563.4527338891. The cubic root of 242221061 is about 623.3576601854.

The spelling of 242221061 in words is "two hundred forty-two million, two hundred twenty-one thousand, sixty-one".