21220110130154 has 64 divisors (see below), whose sum is σ = 37047469084416. Its totient is φ = 9027325891584.

The previous prime is 21220110130133. The next prime is 21220110130157. The reversal of 21220110130154 is 45103101102212.

It is not an unprimeable number, because it can be changed into a prime (21220110130157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11986019 + ... + 13642025.

It is an arithmetic number, because the mean of its divisors is an integer number (578866704444).

Almost surely, 2^{21220110130154} is an apocalyptic number.

21220110130154 is a deficient number, since it is larger than the sum of its proper divisors (15827358954262).

21220110130154 is a wasteful number, since it uses less digits than its factorization.

21220110130154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656639.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 21220110130154 its reverse (45103101102212), we get a palindrome (66323211232366).

The spelling of 21220110130154 in words is "twenty-one trillion, two hundred twenty billion, one hundred ten million, one hundred thirty thousand, one hundred fifty-four".