201010001023 has 16 divisors (see below), whose sum is σ = 220251509856. Its totient is φ = 182322201600.

The previous prime is 201010000943. The next prime is 201010001029. The reversal of 201010001023 is 320100010102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201010001023 is a prime.

It is a super-2 number, since 2×201010001023² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010001029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61515 + ... + 637027.

It is an arithmetic number, because the mean of its divisors is an integer number (13765719366).

Almost surely, 2^201010001023 is an apocalyptic number.

201010001023 is a deficient number, since it is larger than the sum of its proper divisors (19241508833).

201010001023 is a wasteful number, since it uses less digits than its factorization.

201010001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575994.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 201010001023 its reverse (320100010102), we get a palindrome (521110011125).

The spelling of 201010001023 in words is "two hundred one billion, ten million, one thousand, twenty-three".