1202000221 has 2 divisors, whose sum is σ = 1202000222. Its totient is φ = 1202000220.

The previous prime is 1202000213. The next prime is 1202000237. The reversal of 1202000221 is 1220002021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 656076996 + 545923225 = 25614^2 + 23365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202000221 - 2³ = 1202000213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202000198 and 1202000207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202000201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601000110 + 601000111.

It is an arithmetic number, because the mean of its divisors is an integer number (601000111).

Almost surely, 2^1202000221 is an apocalyptic number.

It is an amenable number.

1202000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202000221 is an equidigital number, since it uses as much as digits as its factorization.

1202000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1202000221 is about 34669.8748339246. The cubic root of 1202000221 is about 1063.2486725397.

Adding to 1202000221 its reverse (1220002021), we get a palindrome (2422002242).

The spelling of 1202000221 in words is "one billion, two hundred two million, two hundred twenty-one", and thus it is an aban number.