1212675257 has 2 divisors, whose sum is σ = 1212675258. Its totient is φ = 1212675256.

The previous prime is 1212675251. The next prime is 1212675271. The reversal of 1212675257 is 7525762121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1184116921 + 28558336 = 34411^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212675257 - 2⁴ = 1212675241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212675257.

It is not a weakly prime, because it can be changed into another prime (1212675251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606337628 + 606337629.

It is an arithmetic number, because the mean of its divisors is an integer number (606337629).

Almost surely, 2^1212675257 is an apocalyptic number.

It is an amenable number.

1212675257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212675257 is an equidigital number, since it uses as much as digits as its factorization.

1212675257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The square root of 1212675257 is about 34823.4871458905. The cubic root of 1212675257 is about 1066.3869919874.

The spelling of 1212675257 in words is "one billion, two hundred twelve million, six hundred seventy-five thousand, two hundred fifty-seven".