100230315221 has 4 divisors (see below), whose sum is σ = 100527734892. Its totient is φ = 99932895552.

The previous prime is 100230315217. The next prime is 100230315223. The reversal of 100230315221 is 122513032001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122513032001 = 76801 ⋅1595201.

It can be written as a sum of positive squares in 2 ways, for example, as 9430546321 + 90799768900 = 97111^2 + 301330^2 .

It is a cyclic number.

It is not a de Polignac number, because 100230315221 - 2² = 100230315217 is a prime.

It is a super-2 number, since 2×100230315221² (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 = 100230315193 and 100230315202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100230315223) 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, 148709330 + ... + 148710003.

It is an arithmetic number, because the mean of its divisors is an integer number (25131933723).

Almost surely, 2^100230315221 is an apocalyptic number.

It is an amenable number.

100230315221 is a deficient number, since it is larger than the sum of its proper divisors (297419671).

100230315221 is an equidigital number, since it uses as much as digits as its factorization.

100230315221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297419670.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 100230315221 its reverse (122513032001), we get a palindrome (222743347222).

The spelling of 100230315221 in words is "one hundred billion, two hundred thirty million, three hundred fifteen thousand, two hundred twenty-one".