100320122421 has 12 divisors (see below), whose sum is σ = 144922083072. Its totient is φ = 66873047976.

The previous prime is 100320122377. The next prime is 100320122423. The reversal of 100320122421 is 124221023001.

It is a happy number.

100320122421 is a `hidden beast` number, since 100 + 3 + 20 + 122 + 421 = 666.

It is not a de Polignac number, because 100320122421 - 2²² = 100315928117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100320122394 and 100320122403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320122423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 495061 + ... + 667626.

It is an arithmetic number, because the mean of its divisors is an integer number (12076840256).

Almost surely, 2^100320122421 is an apocalyptic number.

It is an amenable number.

100320122421 is a deficient number, since it is larger than the sum of its proper divisors (44601960651).

100320122421 is a wasteful number, since it uses less digits than its factorization.

100320122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172280 (or 1172277 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100320122421 its reverse (124221023001), we get a palindrome (224541145422).

The spelling of 100320122421 in words is "one hundred billion, three hundred twenty million, one hundred twenty-two thousand, four hundred twenty-one".