101220443 has 4 divisors (see below), whose sum is σ = 101242560. Its totient is φ = 101198328.

The previous prime is 101220439. The next prime is 101220463. The reversal of 101220443 is 344022101.

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

It is a cyclic number.

It is not a de Polignac number, because 101220443 - 2² = 101220439 is a prime.

It is a super-2 number, since 2×101220443² = 20491156162232498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220433) 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, 1355 + ... + 14292.

It is an arithmetic number, because the mean of its divisors is an integer number (25310640).

Almost surely, 2^101220443 is an apocalyptic number.

101220443 is a deficient number, since it is larger than the sum of its proper divisors (22117).

101220443 is an equidigital number, since it uses as much as digits as its factorization.

101220443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22116.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 101220443 is about 10060.8370924094. The cubic root of 101220443 is about 466.0395181601.

Adding to 101220443 its reverse (344022101), we get a palindrome (445242544).

The spelling of 101220443 in words is "one hundred one million, two hundred twenty thousand, four hundred forty-three".