1212288797 has 2 divisors, whose sum is σ = 1212288798. Its totient is φ = 1212288796.

The previous prime is 1212288773. The next prime is 1212288811. The reversal of 1212288797 is 7978822121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1159130116 + 53158681 = 34046^2 + 7291^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212288797 - 2¹² = 1212284701 is a prime.

It is a super-3 number, since 3×1212288797³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212288097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606144398 + 606144399.

It is an arithmetic number, because the mean of its divisors is an integer number (606144399).

Almost surely, 2^1212288797 is an apocalyptic number.

It is an amenable number.

1212288797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212288797 is an equidigital number, since it uses as much as digits as its factorization.

1212288797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 47.

The square root of 1212288797 is about 34817.9378625444. The cubic root of 1212288797 is about 1066.2736998535.

The spelling of 1212288797 in words is "one billion, two hundred twelve million, two hundred eighty-eight thousand, seven hundred ninety-seven".