22001220201001 has 2 divisors, whose sum is σ = 22001220201002. Its totient is φ = 22001220201000.

The previous prime is 22001220200977. The next prime is 22001220201041. The reversal of 22001220201001 is 10010202210022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21909411201001 + 91809000000 = 4680749^2 + 303000^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001220201001 - 2⁷ = 22001220200873 is a prime.

It is not a weakly prime, because it can be changed into another prime (22001220201041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000610100500 + 11000610100501.

It is an arithmetic number, because the mean of its divisors is an integer number (11000610100501).

Almost surely, 2^{22001220201001} is an apocalyptic number.

It is an amenable number.

22001220201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001220201001 is an equidigital number, since it uses as much as digits as its factorization.

22001220201001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22001220201001 its reverse (10010202210022), we get a palindrome (32011422411023).

The spelling of 22001220201001 in words is "twenty-two trillion, one billion, two hundred twenty million, two hundred one thousand, one".