20165330101 has 12 divisors (see below), whose sum is σ = 23607049548. Its totient is φ = 17174469312.

The previous prime is 20165330099. The next prime is 20165330197. The reversal of 20165330101 is 10103356102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14465835076 + 5699495025 = 120274^2 + 75495^2 .

It is not a de Polignac number, because 20165330101 - 2¹ = 20165330099 is a prime.

It is a super-3 number, since 3×20165330101³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165330701) 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 11 ways as a sum of consecutive naturals, for example, 1302936 + ... + 1318321.

It is an arithmetic number, because the mean of its divisors is an integer number (1967254129).

Almost surely, 2^20165330101 is an apocalyptic number.

It is an amenable number.

20165330101 is a deficient number, since it is larger than the sum of its proper divisors (3441719447).

20165330101 is a wasteful number, since it uses less digits than its factorization.

20165330101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621428 (or 2621421 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 20165330101 its reverse (10103356102), we get a palindrome (30268686203).

The spelling of 20165330101 in words is "twenty billion, one hundred sixty-five million, three hundred thirty thousand, one hundred one".