20102133 has 16 divisors (see below), whose sum is σ = 29188800. Its totient is φ = 12257280.

The previous prime is 20102129. The next prime is 20102153. The reversal of 20102133 is 33120102.

It is a happy number.

It is not a de Polignac number, because 20102133 - 2² = 20102129 is a prime.

It is a super-2 number, since 2×20102133² = 808191502299378, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102153) 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, 4428 + ... + 7733.

It is an arithmetic number, because the mean of its divisors is an integer number (1824300).

Almost surely, 2^20102133 is an apocalyptic number.

It is an amenable number.

20102133 is a deficient number, since it is larger than the sum of its proper divisors (9086667).

20102133 is a wasteful number, since it uses less digits than its factorization.

20102133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12212.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20102133 is about 4483.5402306659. The cubic root of 20102133 is about 271.9030300602.

Adding to 20102133 its reverse (33120102), we get a palindrome (53222235).

The spelling of 20102133 in words is "twenty million, one hundred two thousand, one hundred thirty-three".