20533144101 has 8 divisors (see below), whose sum is σ = 27633390624. Its totient is φ = 13560830160.

The previous prime is 20533144087. The next prime is 20533144111. The reversal of 20533144101 is 10144133502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20533144101 - 2³¹ = 18385660453 is a prime.

It is a super-2 number, since 2×20533144101² (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 (20533144111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31982770 + ... + 31983411.

It is an arithmetic number, because the mean of its divisors is an integer number (3454173828).

Almost surely, 2^20533144101 is an apocalyptic number.

It is an amenable number.

20533144101 is a deficient number, since it is larger than the sum of its proper divisors (7100246523).

20533144101 is a wasteful number, since it uses less digits than its factorization.

20533144101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63966291.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20533144101 its reverse (10144133502), we get a palindrome (30677277603).

The spelling of 20533144101 in words is "twenty billion, five hundred thirty-three million, one hundred forty-four thousand, one hundred one".