101423253821 has 2 divisors, whose sum is σ = 101423253822. Its totient is φ = 101423253820.

The previous prime is 101423253773. The next prime is 101423253917. The reversal of 101423253821 is 128352324101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78223699225 + 23199554596 = 279685^2 + 152314^2 .

It is a cyclic number.

It is not a de Polignac number, because 101423253821 - 2¹⁴ = 101423237437 is a prime.

It is a super-2 number, since 2×101423253821² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101423253521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50711626910 + 50711626911.

It is an arithmetic number, because the mean of its divisors is an integer number (50711626911).

Almost surely, 2^101423253821 is an apocalyptic number.

It is an amenable number.

101423253821 is a deficient number, since it is larger than the sum of its proper divisors (1).

101423253821 is an equidigital number, since it uses as much as digits as its factorization.

101423253821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 101423253821 its reverse (128352324101), we get a palindrome (229775577922).

The spelling of 101423253821 in words is "one hundred one billion, four hundred twenty-three million, two hundred fifty-three thousand, eight hundred twenty-one".