20023021101 has 32 divisors (see below), whose sum is σ = 27444925440. Its totient is φ = 12980307200.

The previous prime is 20023021091. The next prime is 20023021127. The reversal of 20023021101 is 10112032002.

It is a cyclic number.

It is not a de Polignac number, because 20023021101 - 2¹⁰ = 20023020077 is a prime.

It is a super-2 number, since 2×20023021101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023021171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19420456 + ... + 19421486.

It is an arithmetic number, because the mean of its divisors is an integer number (857653920).

Almost surely, 2^20023021101 is an apocalyptic number.

It is an amenable number.

20023021101 is a deficient number, since it is larger than the sum of its proper divisors (7421904339).

20023021101 is a wasteful number, since it uses less digits than its factorization.

20023021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20023021101 its reverse (10112032002), we get a palindrome (30135053103).

The spelling of 20023021101 in words is "twenty billion, twenty-three million, twenty-one thousand, one hundred one".