1213345026 has 12 divisors (see below), whose sum is σ = 2628914262. Its totient is φ = 404448336.

The previous prime is 1213344973. The next prime is 1213345031. The reversal of 1213345026 is 6205433121.

1213345026 is a `hidden beast` number, since 121 + 3 + 34 + 502 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 991305225 + 222039801 = 31485^2 + 14901^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33704011 + ... + 33704046.

Almost surely, 2^1213345026 is an apocalyptic number.

1213345026 is an abundant number, since it is smaller than the sum of its proper divisors (1415569236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213345026 is a wasteful number, since it uses less digits than its factorization.

1213345026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67408065 (or 67408062 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1213345026 is about 34833.1024458058. The cubic root of 1213345026 is about 1066.5832801785.

Adding to 1213345026 its reverse (6205433121), we get a palindrome (7418778147).

The spelling of 1213345026 in words is "one billion, two hundred thirteen million, three hundred forty-five thousand, twenty-six".