20111002201 has 2 divisors, whose sum is σ = 20111002202. Its totient is φ = 20111002200.

The previous prime is 20111002183. The next prime is 20111002211. The reversal of 20111002201 is 10220011102.

It is an a-pointer prime, because the next prime (20111002211) can be obtained adding 20111002201 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20105822025 + 5180176 = 141795^2 + 2276^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111002201 - 2⁷ = 20111002073 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111002211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055501100 + 10055501101.

It is an arithmetic number, because the mean of its divisors is an integer number (10055501101).

Almost surely, 2^20111002201 is an apocalyptic number.

It is an amenable number.

20111002201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111002201 is an equidigital number, since it uses as much as digits as its factorization.

20111002201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20111002201 its reverse (10220011102), we get a palindrome (30331013303).

The spelling of 20111002201 in words is "twenty billion, one hundred eleven million, two thousand, two hundred one".