42200039221 has 2 divisors, whose sum is σ = 42200039222. Its totient is φ = 42200039220.

The previous prime is 42200039213. The next prime is 42200039269. The reversal of 42200039221 is 12293000224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23927758596 + 18272280625 = 154686^2 + 135175^2 .

It is a cyclic number.

It is not a de Polignac number, because 42200039221 - 2³ = 42200039213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42200039821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21100019610 + 21100019611.

It is an arithmetic number, because the mean of its divisors is an integer number (21100019611).

Almost surely, 2^42200039221 is an apocalyptic number.

It is an amenable number.

42200039221 is a deficient number, since it is larger than the sum of its proper divisors (1).

42200039221 is an equidigital number, since it uses as much as digits as its factorization.

42200039221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 42200039221 its reverse (12293000224), we get a palindrome (54493039445).

It can be divided in two parts, 4220003 and 9221, that added together give a palindrome (4229224).

The spelling of 42200039221 in words is "forty-two billion, two hundred million, thirty-nine thousand, two hundred twenty-one".