140101100021 has 2 divisors, whose sum is σ = 140101100022. Its totient is φ = 140101100020.

The previous prime is 140101099991. The next prime is 140101100047. The reversal of 140101100021 is 120001101041.

140101100021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106740077521 + 33361022500 = 326711^2 + 182650^2 .

It is a cyclic number.

It is not a de Polignac number, because 140101100021 - 2¹⁰ = 140101098997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140101099975 and 140101100011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140101100921) 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, 70050550010 + 70050550011.

It is an arithmetic number, because the mean of its divisors is an integer number (70050550011).

Almost surely, 2^140101100021 is an apocalyptic number.

It is an amenable number.

140101100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

140101100021 is an equidigital number, since it uses as much as digits as its factorization.

140101100021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 140101100021 its reverse (120001101041), we get a palindrome (260102201062).

The spelling of 140101100021 in words is "one hundred forty billion, one hundred one million, one hundred thousand, twenty-one".