1021222207 has 2 divisors, whose sum is σ = 1021222208. Its totient is φ = 1021222206.

The previous prime is 1021222187. The next prime is 1021222229. The reversal of 1021222207 is 7022221201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021222207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021222247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510611103 + 510611104.

It is an arithmetic number, because the mean of its divisors is an integer number (510611104).

Almost surely, 2^1021222207 is an apocalyptic number.

1021222207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021222207 is an equidigital number, since it uses as much as digits as its factorization.

1021222207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1021222207 is about 31956.5675096685. The cubic root of 1021222207 is about 1007.0246083344.

Adding to 1021222207 its reverse (7022221201), we get a palindrome (8043443408).

It can be divided in two parts, 102122 and 2207, that added together give a square (104329 = 323²).

The spelling of 1021222207 in words is "one billion, twenty-one million, two hundred twenty-two thousand, two hundred seven".