20011102249 has 2 divisors, whose sum is σ = 20011102250. Its totient is φ = 20011102248.

The previous prime is 20011102171. The next prime is 20011102273. The reversal of 20011102249 is 94220111002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16924188649 + 3086913600 = 130093^2 + 55560^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011102249 - 2¹³ = 20011094057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011102289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005551124 + 10005551125.

It is an arithmetic number, because the mean of its divisors is an integer number (10005551125).

Almost surely, 2^20011102249 is an apocalyptic number.

It is an amenable number.

20011102249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011102249 is an equidigital number, since it uses as much as digits as its factorization.

20011102249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 20011102249 in words is "twenty billion, eleven million, one hundred two thousand, two hundred forty-nine".