20010230001 has 24 divisors (see below), whose sum is σ = 30827299464. Its totient is φ = 12463779840.

The previous prime is 20010229997. The next prime is 20010230003. The reversal of 20010230001 is 10003201002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7014230001 + 12996000000 = 83751^2 + 114000^2 .

It is not a de Polignac number, because 20010230001 - 2² = 20010229997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20010230003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 456360 + ... + 498281.

It is an arithmetic number, because the mean of its divisors is an integer number (1284470811).

Almost surely, 2^20010230001 is an apocalyptic number.

It is an amenable number.

20010230001 is a deficient number, since it is larger than the sum of its proper divisors (10817069463).

20010230001 is a wasteful number, since it uses less digits than its factorization.

20010230001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954801 (or 954798 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20010230001 its reverse (10003201002), we get a palindrome (30013431003).

The spelling of 20010230001 in words is "twenty billion, ten million, two hundred thirty thousand, one".