11200101221 has 2 divisors, whose sum is σ = 11200101222. Its totient is φ = 11200101220.

The previous prime is 11200101203. The next prime is 11200101233. The reversal of 11200101221 is 12210100211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7118296900 + 4081804321 = 84370^2 + 63889^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200101221 - 2¹⁴ = 11200084837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11200101251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600050610 + 5600050611.

It is an arithmetic number, because the mean of its divisors is an integer number (5600050611).

Almost surely, 2^11200101221 is an apocalyptic number.

It is an amenable number.

11200101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11200101221 is an equidigital number, since it uses as much as digits as its factorization.

11200101221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11200101221 its reverse (12210100211), we get a palindrome (23410201432).

The spelling of 11200101221 in words is "eleven billion, two hundred million, one hundred one thousand, two hundred twenty-one".