1212020010197 has 2 divisors, whose sum is σ = 1212020010198. Its totient is φ = 1212020010196.

The previous prime is 1212020010181. The next prime is 1212020010203. The reversal of 1212020010197 is 7910100202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1168666940401 + 43353069796 = 1081049^2 + 208214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212020010197 - 2⁴ = 1212020010181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212020010997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606010005098 + 606010005099.

It is an arithmetic number, because the mean of its divisors is an integer number (606010005099).

Almost surely, 2^{1212020010197} is an apocalyptic number.

It is an amenable number.

1212020010197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212020010197 is an equidigital number, since it uses as much as digits as its factorization.

1212020010197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 1212020010197 in words is "one trillion, two hundred twelve billion, twenty million, ten thousand, one hundred ninety-seven".