20101033 has 4 divisors (see below), whose sum is σ = 20254608. Its totient is φ = 19947460.

The previous prime is 20101013. The next prime is 20101073. The reversal of 20101033 is 33010102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20101033 - 2⁵ = 20101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76591 + ... + 76852.

It is an arithmetic number, because the mean of its divisors is an integer number (5063652).

Almost surely, 2^20101033 is an apocalyptic number.

It is an amenable number.

20101033 is a deficient number, since it is larger than the sum of its proper divisors (153575).

20101033 is a wasteful number, since it uses less digits than its factorization.

20101033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153574.

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

The square root of 20101033 is about 4483.4175580688. The cubic root of 20101033 is about 271.8980704076.

Adding to 20101033 its reverse (33010102), we get a palindrome (53111135).

The spelling of 20101033 in words is "twenty million, one hundred one thousand, thirty-three".