101235311621 has 4 divisors (see below), whose sum is σ = 101236095072. Its totient is φ = 101234528172.

The previous prime is 101235311543. The next prime is 101235311623. The reversal of 101235311621 is 126113532101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 101235311621 - 2¹⁴ = 101235295237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101235311623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146891 + ... + 473336.

It is an arithmetic number, because the mean of its divisors is an integer number (25309023768).

Almost surely, 2^101235311621 is an apocalyptic number.

It is an amenable number.

101235311621 is a deficient number, since it is larger than the sum of its proper divisors (783451).

101235311621 is an equidigital number, since it uses as much as digits as its factorization.

101235311621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783450.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 101235311621 its reverse (126113532101), we get a palindrome (227348843722).

The spelling of 101235311621 in words is "one hundred one billion, two hundred thirty-five million, three hundred eleven thousand, six hundred twenty-one".