221010110020220 has 24 divisors (see below), whose sum is σ = 464226785293824. Its totient is φ = 88383938436416.

The previous prime is 221010110020181. The next prime is 221010110020223. The reversal of 221010110020220 is 22020011010122.

221010110020220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221010110020220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221010110020195 and 221010110020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010110020223) 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, 1256508092 + ... + 1256683971.

It is an arithmetic number, because the mean of its divisors is an integer number (19342782720576).

Almost surely, 2^{221010110020220} is an apocalyptic number.

221010110020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010110020220 is an abundant number, since it is smaller than the sum of its proper divisors (243216675273604).

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

221010110020220 is a wasteful number, since it uses less digits than its factorization.

221010110020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513196469 (or 2513196467 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221010110020220 its reverse (22020011010122), we get a palindrome (243030121030342).

The spelling of 221010110020220 in words is "two hundred twenty-one trillion, ten billion, one hundred ten million, twenty thousand, two hundred twenty".