101043204221 has 4 divisors (see below), whose sum is σ = 101049780444. Its totient is φ = 101036628000.

The previous prime is 101043204217. The next prime is 101043204233. The reversal of 101043204221 is 122402340101.

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 69901543321 + 31141660900 = 264389^2 + 176470^2 .

It is a cyclic number.

It is not a de Polignac number, because 101043204221 - 2² = 101043204217 is a prime.

It is a super-3 number, since 3×101043204221³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101043204193 and 101043204202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101043204421) 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, 3265010 + ... + 3295811.

It is an arithmetic number, because the mean of its divisors is an integer number (25262445111).

Almost surely, 2^101043204221 is an apocalyptic number.

It is an amenable number.

101043204221 is a deficient number, since it is larger than the sum of its proper divisors (6576223).

101043204221 is an equidigital number, since it uses as much as digits as its factorization.

101043204221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576222.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 101043204221 its reverse (122402340101), we get a palindrome (223445544322).

The spelling of 101043204221 in words is "one hundred one billion, forty-three million, two hundred four thousand, two hundred twenty-one".