100320011221 has 4 divisors (see below), whose sum is σ = 100321459200. Its totient is φ = 100318563244.

The previous prime is 100320011213. The next prime is 100320011279. The reversal of 100320011221 is 122110023001.

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: 122110023001 = 29851 ⋅4090651.

It is a cyclic number.

It is not a de Polignac number, because 100320011221 - 2³ = 100320011213 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 (100320011201) 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, 614551 + ... + 760468.

It is an arithmetic number, because the mean of its divisors is an integer number (25080364800).

Almost surely, 2^100320011221 is an apocalyptic number.

It is an amenable number.

100320011221 is a deficient number, since it is larger than the sum of its proper divisors (1447979).

100320011221 is an equidigital number, since it uses as much as digits as its factorization.

100320011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447978.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100320011221 its reverse (122110023001), we get a palindrome (222430034222).

The spelling of 100320011221 in words is "one hundred billion, three hundred twenty million, eleven thousand, two hundred twenty-one".