1212022009997 has 2 divisors, whose sum is σ = 1212022009998. Its totient is φ = 1212022009996.

The previous prime is 1212022009993. The next prime is 1212022010041. The reversal of 1212022009997 is 7999002202121.

It is a happy number.

It is an a-pointer prime, because the next prime (1212022010041) can be obtained adding 1212022009997 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 974917289641 + 237104720356 = 987379^2 + 486934^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212022009997 - 2² = 1212022009993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212022009993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606011004998 + 606011004999.

It is an arithmetic number, because the mean of its divisors is an integer number (606011004999).

Almost surely, 2^{1212022009997} is an apocalyptic number.

It is an amenable number.

1212022009997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212022009997 is an equidigital number, since it uses as much as digits as its factorization.

1212022009997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 1212022009997 in words is "one trillion, two hundred twelve billion, twenty-two million, nine thousand, nine hundred ninety-seven".