1210222105 has 16 divisors (see below), whose sum is σ = 1474433424. Its totient is φ = 953441280.

The previous prime is 1210222103. The next prime is 1210222121. The reversal of 1210222105 is 5012220121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 851929 + 1209370176 = 923^2 + 34776^2 .

It is not a de Polignac number, because 1210222105 - 2¹ = 1210222103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210222103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275587 + ... + 279943.

It is an arithmetic number, because the mean of its divisors is an integer number (92152089).

Almost surely, 2^1210222105 is an apocalyptic number.

It is an amenable number.

1210222105 is a deficient number, since it is larger than the sum of its proper divisors (264211319).

1210222105 is an equidigital number, since it uses as much as digits as its factorization.

1210222105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5196.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1210222105 is about 34788.2466502697. The cubic root of 1210222105 is about 1065.6674326633.

Adding to 1210222105 its reverse (5012220121), we get a palindrome (6222442226).

The spelling of 1210222105 in words is "one billion, two hundred ten million, two hundred twenty-two thousand, one hundred five".