20110102210249 has 2 divisors, whose sum is σ = 20110102210250. Its totient is φ = 20110102210248.

The previous prime is 20110102210189. The next prime is 20110102210259. The reversal of 20110102210249 is 94201220101102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19902126992400 + 207975217849 = 4461180^2 + 456043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110102210249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20110102210259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055051105124 + 10055051105125.

It is an arithmetic number, because the mean of its divisors is an integer number (10055051105125).

Almost surely, 2^{20110102210249} is an apocalyptic number.

It is an amenable number.

20110102210249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110102210249 is an equidigital number, since it uses as much as digits as its factorization.

20110102210249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 20110102210249 in words is "twenty trillion, one hundred ten billion, one hundred two million, two hundred ten thousand, two hundred forty-nine".