2120203296649 has 2 divisors, whose sum is σ = 2120203296650. Its totient is φ = 2120203296648.

The previous prime is 2120203296623. The next prime is 2120203296691. The reversal of 2120203296649 is 9466923020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1702411705225 + 417791591424 = 1304765^2 + 646368^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120203296649 - 2³¹ = 2118055813001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120203296599 and 2120203296608.

It is not a weakly prime, because it can be changed into another prime (2120203296349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060101648324 + 1060101648325.

It is an arithmetic number, because the mean of its divisors is an integer number (1060101648325).

Almost surely, 2^{2120203296649} is an apocalyptic number.

It is an amenable number.

2120203296649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120203296649 is an equidigital number, since it uses as much as digits as its factorization.

2120203296649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 2120203296649 in words is "two trillion, one hundred twenty billion, two hundred three million, two hundred ninety-six thousand, six hundred forty-nine".