2100220009913 has 2 divisors, whose sum is σ = 2100220009914. Its totient is φ = 2100220009912.

The previous prime is 2100220009819. The next prime is 2100220010059. The reversal of 2100220009913 is 3199000220012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1926774414889 + 173445595024 = 1388083^2 + 416468^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100220009913 - 2²⁴ = 2100203232697 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100220009513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050110004956 + 1050110004957.

It is an arithmetic number, because the mean of its divisors is an integer number (1050110004957).

Almost surely, 2^{2100220009913} is an apocalyptic number.

It is an amenable number.

2100220009913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100220009913 is an equidigital number, since it uses as much as digits as its factorization.

2100220009913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

Adding to 2100220009913 its reverse (3199000220012), we get a palindrome (5299220229925).

The spelling of 2100220009913 in words is "two trillion, one hundred billion, two hundred twenty million, nine thousand, nine hundred thirteen".