101254978621 has 8 divisors (see below), whose sum is σ = 108415775160. Its totient is φ = 94228028928.

The previous prime is 101254978567. The next prime is 101254978633. The reversal of 101254978621 is 126879452101.

It can be written as a sum of positive squares in 4 ways, for example, as 8613881721 + 92641096900 = 92811^2 + 304370^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101254978621 - 2⁹ = 101254978109 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 (101254978651) 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 in 7 ways as a sum of consecutive naturals, for example, 33460146 + ... + 33463171.

It is an arithmetic number, because the mean of its divisors is an integer number (13551971895).

Almost surely, 2^101254978621 is an apocalyptic number.

It is an amenable number.

101254978621 is a deficient number, since it is larger than the sum of its proper divisors (7160796539).

101254978621 is an equidigital number, since it uses as much as digits as its factorization.

101254978621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66923423.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 101254978621 in words is "one hundred one billion, two hundred fifty-four million, nine hundred seventy-eight thousand, six hundred twenty-one".