1212270071 has 2 divisors, whose sum is σ = 1212270072. Its totient is φ = 1212270070.

The previous prime is 1212270067. The next prime is 1212270077. The reversal of 1212270071 is 1700722121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212270071 - 2² = 1212270067 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212270077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606135035 + 606135036.

It is an arithmetic number, because the mean of its divisors is an integer number (606135036).

Almost surely, 2^1212270071 is an apocalyptic number.

1212270071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212270071 is an equidigital number, since it uses as much as digits as its factorization.

1212270071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 1212270071 is about 34817.6689483946. The cubic root of 1212270071 is about 1066.2682096479.

Adding to 1212270071 its reverse (1700722121), we get a palindrome (2912992192).

The spelling of 1212270071 in words is "one billion, two hundred twelve million, two hundred seventy thousand, seventy-one".