1201222105 has 8 divisors (see below), whose sum is σ = 1444798152. Its totient is φ = 958756608.

The previous prime is 1201222103. The next prime is 1201222109. The reversal of 1201222105 is 5012221021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4338889 + 1196883216 = 2083^2 + 34596^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201222105 - 2¹ = 1201222103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201222103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275254 + ... + 279583.

It is an arithmetic number, because the mean of its divisors is an integer number (180599769).

Almost surely, 2^1201222105 is an apocalyptic number.

It is an amenable number.

1201222105 is a deficient number, since it is larger than the sum of its proper divisors (243576047).

1201222105 is an equidigital number, since it uses as much as digits as its factorization.

1201222105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555275.

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

The square root of 1201222105 is about 34658.6512288058. The cubic root of 1201222105 is about 1063.0191913305.

Adding to 1201222105 its reverse (5012221021), we get a palindrome (6213443126).

The spelling of 1201222105 in words is "one billion, two hundred one million, two hundred twenty-two thousand, one hundred five".