1351212105 has 32 divisors (see below), whose sum is σ = 2292361344. Its totient is φ = 677293056.

The previous prime is 1351212059. The next prime is 1351212131. The reversal of 1351212105 is 5012121531.

1351212105 = 65² + 66² + ... + 1594².

It is not a de Polignac number, because 1351212105 - 2⁹ = 1351211593 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197319 + ... + 204051.

It is an arithmetic number, because the mean of its divisors is an integer number (71636292).

Almost surely, 2^1351212105 is an apocalyptic number.

1351212105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1351212105 is a deficient number, since it is larger than the sum of its proper divisors (941149239).

1351212105 is a wasteful number, since it uses less digits than its factorization.

1351212105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1351212105 is about 36758.8371007571. The cubic root of 1351212105 is about 1105.5401234609.

Adding to 1351212105 its reverse (5012121531), we get a palindrome (6363333636).

The spelling of 1351212105 in words is "one billion, three hundred fifty-one million, two hundred twelve thousand, one hundred five".