1306122226 has 16 divisors (see below), whose sum is σ = 1966923648. Its totient is φ = 650486800.

The previous prime is 1306122221. The next prime is 1306122253. The reversal of 1306122226 is 6222216031.

It is a self number, because there is not a number n which added to its sum of digits gives 1306122226.

It is not an unprimeable number, because it can be changed into a prime (1306122221) 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, 1017381 + ... + 1018663.

It is an arithmetic number, because the mean of its divisors is an integer number (122932728).

Almost surely, 2^1306122226 is an apocalyptic number.

1306122226 is a deficient number, since it is larger than the sum of its proper divisors (660801422).

1306122226 is a wasteful number, since it uses less digits than its factorization.

1306122226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1306122226 is about 36140.3130312951. The cubic root of 1306122226 is about 1093.1034708084.

Adding to 1306122226 its reverse (6222216031), we get a palindrome (7528338257).

The spelling of 1306122226 in words is "one billion, three hundred six million, one hundred twenty-two thousand, two hundred twenty-six".