30211223001997 has 2 divisors, whose sum is σ = 30211223001998. Its totient is φ = 30211223001996.

The previous prime is 30211223001901. The next prime is 30211223002039. The reversal of 30211223001997 is 79910032211203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25750083398116 + 4461139603881 = 5074454^2 + 2112141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30211223001997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30211223001797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105611500998 + 15105611500999.

It is an arithmetic number, because the mean of its divisors is an integer number (15105611500999).

Almost surely, 2^{30211223001997} is an apocalyptic number.

It is an amenable number.

30211223001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30211223001997 is an equidigital number, since it uses as much as digits as its factorization.

30211223001997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 30211223001997 in words is "thirty trillion, two hundred eleven billion, two hundred twenty-three million, one thousand, nine hundred ninety-seven".