20101330 has 32 divisors (see below), whose sum is σ = 37997568. Its totient is φ = 7646400.

The previous prime is 20101309. The next prime is 20101331. The reversal of 20101330 is 3310102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20101331) 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, 18379 + ... + 19441.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^20101330 is an apocalyptic number.

20101330 is a deficient number, since it is larger than the sum of its proper divisors (17896238).

20101330 is a wasteful number, since it uses less digits than its factorization.

20101330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 20101330 is about 4483.4506800008. The cubic root of 20101330 is about 271.8994095317.

Adding to 20101330 its reverse (3310102), we get a palindrome (23411432).

The spelling of 20101330 in words is "twenty million, one hundred one thousand, three hundred thirty".