101621260641 has 4 divisors (see below), whose sum is σ = 135495014192. Its totient is φ = 67747507092.

The previous prime is 101621260591. The next prime is 101621260651. The reversal of 101621260641 is 146062126101.

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 an emirpimes, since its reverse is a distinct semiprime: 146062126101 = 3 ⋅48687375367.

It is not a de Polignac number, because 101621260641 - 2⁶ = 101621260577 is a prime.

It is a super-2 number, since 2×101621260641² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101621260599 and 101621260608.

It is not an unprimeable number, because it can be changed into a prime (101621260651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16936876771 + ... + 16936876776.

It is an arithmetic number, because the mean of its divisors is an integer number (33873753548).

Almost surely, 2^101621260641 is an apocalyptic number.

It is an amenable number.

101621260641 is a deficient number, since it is larger than the sum of its proper divisors (33873753551).

101621260641 is an equidigital number, since it uses as much as digits as its factorization.

101621260641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33873753550.

The product of its (nonzero) digits is 3456, while the sum is 30.

Adding to 101621260641 its reverse (146062126101), we get a palindrome (247683386742).

The spelling of 101621260641 in words is "one hundred one billion, six hundred twenty-one million, two hundred sixty thousand, six hundred forty-one".