2120100009197 has 2 divisors, whose sum is σ = 2120100009198. Its totient is φ = 2120100009196.

The previous prime is 2120100009193. The next prime is 2120100009217. The reversal of 2120100009197 is 7919000010212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1971513659236 + 148586349961 = 1404106^2 + 385469^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120100009197 - 2² = 2120100009193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120100009193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060050004598 + 1060050004599.

It is an arithmetic number, because the mean of its divisors is an integer number (1060050004599).

Almost surely, 2^{2120100009197} is an apocalyptic number.

It is an amenable number.

2120100009197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120100009197 is an equidigital number, since it uses as much as digits as its factorization.

2120100009197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 2120100009197 in words is "two trillion, one hundred twenty billion, one hundred million, nine thousand, one hundred ninety-seven".