1012213305 has 12 divisors (see below), whose sum is σ = 1754503140. Its totient is φ = 539847072.

The previous prime is 1012213273. The next prime is 1012213309. The reversal of 1012213305 is 5033122101.

1012213305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 170459136 + 841754169 = 13056^2 + 29013^2 .

It is not a de Polignac number, because 1012213305 - 2⁵ = 1012213273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012213309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11246770 + ... + 11246859.

It is an arithmetic number, because the mean of its divisors is an integer number (146208595).

Almost surely, 2^1012213305 is an apocalyptic number.

1012213305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1012213305 is a deficient number, since it is larger than the sum of its proper divisors (742289835).

1012213305 is a wasteful number, since it uses less digits than its factorization.

1012213305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22493640 (or 22493637 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1012213305 is about 31815.2998571442. The cubic root of 1012213305 is about 1004.0546393469.

Adding to 1012213305 its reverse (5033122101), we get a palindrome (6045335406).

The spelling of 1012213305 in words is "one billion, twelve million, two hundred thirteen thousand, three hundred five".