201001221011 has 2 divisors, whose sum is σ = 201001221012. Its totient is φ = 201001221010.

The previous prime is 201001221007. The next prime is 201001221137. The reversal of 201001221011 is 110122100102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201001221011 - 2² = 201001221007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201001220983 and 201001221001.

It is not a weakly prime, because it can be changed into another prime (201001221511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500610505 + 100500610506.

It is an arithmetic number, because the mean of its divisors is an integer number (100500610506).

Almost surely, 2^201001221011 is an apocalyptic number.

201001221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001221011 is an equidigital number, since it uses as much as digits as its factorization.

201001221011 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 11.

Adding to 201001221011 its reverse (110122100102), we get a palindrome (311123321113).

The spelling of 201001221011 in words is "two hundred one billion, one million, two hundred twenty-one thousand, eleven".