21220110223100 has 18 divisors (see below), whose sum is σ = 46047639184344. Its totient is φ = 8488044089200.

The previous prime is 21220110223097. The next prime is 21220110223171. The reversal of 21220110223100 is 132201102212.

It is a super-2 number, since 2×21220110223100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106100551016 + ... + 106100551215.

It is an arithmetic number, because the mean of its divisors is an integer number (2558202176908).

Almost surely, 2^{21220110223100} is an apocalyptic number.

21220110223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220110223100 is an abundant number, since it is smaller than the sum of its proper divisors (24827528961244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220110223100 is a wasteful number, since it uses less digits than its factorization.

21220110223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212201102245 (or 212201102238 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21220110223100 its reverse (132201102212), we get a palindrome (21352311325312).

The spelling of 21220110223100 in words is "twenty-one trillion, two hundred twenty billion, one hundred ten million, two hundred twenty-three thousand, one hundred".