20100201001 has 2 divisors, whose sum is σ = 20100201002. Its totient is φ = 20100201000.

The previous prime is 20100200983. The next prime is 20100201029. The reversal of 20100201001 is 10010200102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17976373776 + 2123827225 = 134076^2 + 46085^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100201001 - 2¹⁹ = 20099676713 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100201041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050100500 + 10050100501.

It is an arithmetic number, because the mean of its divisors is an integer number (10050100501).

Almost surely, 2^20100201001 is an apocalyptic number.

It is an amenable number.

20100201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100201001 is an equidigital number, since it uses as much as digits as its factorization.

20100201001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20100201001 its reverse (10010200102), we get a palindrome (30110401103).

The spelling of 20100201001 in words is "twenty billion, one hundred million, two hundred one thousand, one".