101220533 has 8 divisors (see below), whose sum is σ = 108932760. Its totient is φ = 93703680.

The previous prime is 101220529. The next prime is 101220557. The reversal of 101220533 is 335022101.

It can be written as a sum of positive squares in 4 ways, for example, as 4355569 + 96864964 = 2087^2 + 9842^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101220533 - 2² = 101220529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47768 + ... + 49841.

It is an arithmetic number, because the mean of its divisors is an integer number (13616595).

Almost surely, 2^101220533 is an apocalyptic number.

It is an amenable number.

101220533 is a deficient number, since it is larger than the sum of its proper divisors (7712227).

101220533 is an equidigital number, since it uses as much as digits as its factorization.

101220533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97687.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 101220533 is about 10060.8415651972. The cubic root of 101220533 is about 466.0396562861.

Adding to 101220533 its reverse (335022101), we get a palindrome (436242634).

The spelling of 101220533 in words is "one hundred one million, two hundred twenty thousand, five hundred thirty-three".