10001220201211 has 2 divisors, whose sum is σ = 10001220201212. Its totient is φ = 10001220201210.

The previous prime is 10001220201209. The next prime is 10001220201223. The reversal of 10001220201211 is 11210202210001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10001220201211 - 2¹ = 10001220201209 is a prime.

It is a super-2 number, since 2×10001220201211² (a number of 27 digits) contains 22 as substring.

Together with 10001220201209, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10001220201191 and 10001220201200.

It is not a weakly prime, because it can be changed into another prime (10001220201311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000610100605 + 5000610100606.

It is an arithmetic number, because the mean of its divisors is an integer number (5000610100606).

Almost surely, 2^{10001220201211} is an apocalyptic number.

10001220201211 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001220201211 is an equidigital number, since it uses as much as digits as its factorization.

10001220201211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10001220201211 its reverse (11210202210001), we get a palindrome (21211422411212).

The spelling of 10001220201211 in words is "ten trillion, one billion, two hundred twenty million, two hundred one thousand, two hundred eleven".