221110010101220 has 24 divisors (see below), whose sum is σ = 465010861682304. Its totient is φ = 88314510617696.

The previous prime is 221110010101177. The next prime is 221110010101223. The reversal of 221110010101220 is 22101010011122.

It is a super-2 number, since 2×221110010101220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221110010101195 and 221110010101204.

It is not an unprimeable number, because it can be changed into a prime (221110010101223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8093324924 + ... + 8093352243.

It is an arithmetic number, because the mean of its divisors is an integer number (19375452570096).

Almost surely, 2^{221110010101220} is an apocalyptic number.

221110010101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110010101220 is an abundant number, since it is smaller than the sum of its proper divisors (243900851581084).

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

221110010101220 is a wasteful number, since it uses less digits than its factorization.

221110010101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16186677859 (or 16186677857 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221110010101220 its reverse (22101010011122), we get a palindrome (243211020112342).

The spelling of 221110010101220 in words is "two hundred twenty-one trillion, one hundred ten billion, ten million, one hundred one thousand, two hundred twenty".