220100033 has 4 divisors (see below), whose sum is σ = 220316628. Its totient is φ = 219883440.

The previous prime is 220099973. The next prime is 220100039. The reversal of 220100033 is 330001022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164044864 + 56055169 = 12808^2 + 7487^2 .

It is a cyclic number.

It is not a de Polignac number, because 220100033 - 2¹² = 220095937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220099987 and 220100023.

It is not an unprimeable number, because it can be changed into a prime (220100039) 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, 106766 + ... + 108807.

It is an arithmetic number, because the mean of its divisors is an integer number (55079157).

Almost surely, 2^220100033 is an apocalyptic number.

It is an amenable number.

220100033 is a deficient number, since it is larger than the sum of its proper divisors (216595).

220100033 is a wasteful number, since it uses less digits than its factorization.

220100033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216594.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 220100033 is about 14835.7687026996. The cubic root of 220100033 is about 603.7725568289.

Adding to 220100033 its reverse (330001022), we get a palindrome (550101055).

The spelling of 220100033 in words is "two hundred twenty million, one hundred thousand, thirty-three".