1210222505 has 16 divisors (see below), whose sum is σ = 1485057024. Its totient is φ = 946370880.

The previous prime is 1210222463. The next prime is 1210222549. The reversal of 1210222505 is 5052220121.

It is a happy number.

It is not a de Polignac number, because 1210222505 - 2¹² = 1210218409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211259 + ... + 216911.

It is an arithmetic number, because the mean of its divisors is an integer number (92816064).

Almost surely, 2^1210222505 is an apocalyptic number.

It is an amenable number.

1210222505 is a deficient number, since it is larger than the sum of its proper divisors (274834519).

1210222505 is an equidigital number, since it uses as much as digits as its factorization.

1210222505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1210222505 is about 34788.2523993373. The cubic root of 1210222505 is about 1065.6675500707.

Adding to 1210222505 its reverse (5052220121), we get a palindrome (6262442626).

The spelling of 1210222505 in words is "one billion, two hundred ten million, two hundred twenty-two thousand, five hundred five".