1225211113 has 16 divisors (see below), whose sum is σ = 1419984000. Its totient is φ = 1035441792.

The previous prime is 1225211107. The next prime is 1225211129. The reversal of 1225211113 is 3111125221.

It is not a de Polignac number, because 1225211113 - 2⁹ = 1225210601 is a prime.

It is a super-3 number, since 3×1225211113³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225011113) 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, 233523 + ... + 238711.

It is an arithmetic number, because the mean of its divisors is an integer number (88749000).

Almost surely, 2^1225211113 is an apocalyptic number.

It is an amenable number.

1225211113 is a deficient number, since it is larger than the sum of its proper divisors (194772887).

1225211113 is an equidigital number, since it uses as much as digits as its factorization.

1225211113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664.

The product of its digits is 120, while the sum is 19.

The square root of 1225211113 is about 35003.0157700733. The cubic root of 1225211113 is about 1070.0489432295.

Adding to 1225211113 its reverse (3111125221), we get a palindrome (4336336334).

The spelling of 1225211113 in words is "one billion, two hundred twenty-five million, two hundred eleven thousand, one hundred thirteen".