100103011221 has 16 divisors (see below), whose sum is σ = 134310403584. Its totient is φ = 66316557504.

The previous prime is 100103011201. The next prime is 100103011303. The reversal of 100103011221 is 122110301001.

It is not a de Polignac number, because 100103011221 - 2⁷ = 100103011093 is a prime.

It is a super-2 number, since 2×100103011221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100103011197 and 100103011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100103011201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238315 + ... + 506951.

It is an arithmetic number, because the mean of its divisors is an integer number (8394400224).

Almost surely, 2^100103011221 is an apocalyptic number.

It is an amenable number.

100103011221 is a deficient number, since it is larger than the sum of its proper divisors (34207392363).

100103011221 is a wasteful number, since it uses less digits than its factorization.

100103011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269420.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 100103011221 its reverse (122110301001), we get a palindrome (222213312222).

The spelling of 100103011221 in words is "one hundred billion, one hundred three million, eleven thousand, two hundred twenty-one".