2123210320811 has 2 divisors, whose sum is σ = 2123210320812. Its totient is φ = 2123210320810.

The previous prime is 2123210320783. The next prime is 2123210320849. The reversal of 2123210320811 is 1180230123212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123210320811 - 2²² = 2123206126507 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123210320871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061605160405 + 1061605160406.

It is an arithmetic number, because the mean of its divisors is an integer number (1061605160406).

Almost surely, 2^{2123210320811} is an apocalyptic number.

2123210320811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123210320811 is an equidigital number, since it uses as much as digits as its factorization.

2123210320811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 2123210320811 in words is "two trillion, one hundred twenty-three billion, two hundred ten million, three hundred twenty thousand, eight hundred eleven".