60420221 has 2 divisors, whose sum is σ = 60420222. Its totient is φ = 60420220.

The previous prime is 60420211. The next prime is 60420251. The reversal of 60420221 is 12202406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49857721 + 10562500 = 7061^2 + 3250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60420221 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60420221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60420211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30210110 + 30210111.

It is an arithmetic number, because the mean of its divisors is an integer number (30210111).

Almost surely, 2^60420221 is an apocalyptic number.

It is an amenable number.

60420221 is a deficient number, since it is larger than the sum of its proper divisors (1).

60420221 is an equidigital number, since it uses as much as digits as its factorization.

60420221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 60420221 is about 7773.0445129306. The cubic root of 60420221 is about 392.3985884837.

Adding to 60420221 its reverse (12202406), we get a palindrome (72622627).

The spelling of 60420221 in words is "sixty million, four hundred twenty thousand, two hundred twenty-one".