20010023011 has 6 divisors (see below), whose sum is σ = 21994488236. Its totient is φ = 18190929900.

The previous prime is 20010022993. The next prime is 20010023057. The reversal of 20010023011 is 11032001002.

It is not a de Polignac number, because 20010023011 - 2⁵ = 20010022979 is a prime.

It is a super-2 number, since 2×20010023011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010026011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82685925 + ... + 82686166.

Almost surely, 2^20010023011 is an apocalyptic number.

20010023011 is a deficient number, since it is larger than the sum of its proper divisors (1984465225).

20010023011 is a wasteful number, since it uses less digits than its factorization.

20010023011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165372113 (or 165372102 counting only the distinct ones).

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

Adding to 20010023011 its reverse (11032001002), we get a palindrome (31042024013).

The spelling of 20010023011 in words is "twenty billion, ten million, twenty-three thousand, eleven".