100424101220621 has 4 divisors (see below), whose sum is σ = 102126204631200. Its totient is φ = 98721997810044.

The previous prime is 100424101220593. The next prime is 100424101220629. The reversal of 100424101220621 is 126022101424001.

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.

It is a cyclic number.

It is not a de Polignac number, because 100424101220621 - 2¹⁴ = 100424101204237 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 (100424101220629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851051705201 + ... + 851051705318.

It is an arithmetic number, because the mean of its divisors is an integer number (25531551157800).

Almost surely, 2^{100424101220621} is an apocalyptic number.

It is an amenable number.

100424101220621 is a deficient number, since it is larger than the sum of its proper divisors (1702103410579).

100424101220621 is an equidigital number, since it uses as much as digits as its factorization.

100424101220621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702103410578.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 100424101220621 its reverse (126022101424001), we get a palindrome (226446202644622).

The spelling of 100424101220621 in words is "one hundred trillion, four hundred twenty-four billion, one hundred one million, two hundred twenty thousand, six hundred twenty-one".