101223541 has 2 divisors, whose sum is σ = 101223542. Its totient is φ = 101223540.

The previous prime is 101223523. The next prime is 101223581. The reversal of 101223541 is 145322101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101082916 + 140625 = 10054^2 + 375^2 .

It is an emirp because it is prime and its reverse (145322101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101223541 - 2¹³ = 101215349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101223581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611770 + 50611771.

It is an arithmetic number, because the mean of its divisors is an integer number (50611771).

Almost surely, 2^101223541 is an apocalyptic number.

It is an amenable number.

101223541 is a deficient number, since it is larger than the sum of its proper divisors (1).

101223541 is an equidigital number, since it uses as much as digits as its factorization.

101223541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 101223541 is about 10060.9910545632. The cubic root of 101223541 is about 466.0442727190.

Adding to 101223541 its reverse (145322101), we get a palindrome (246545642).

The spelling of 101223541 in words is "one hundred one million, two hundred twenty-three thousand, five hundred forty-one".