221010102220 has 12 divisors (see below), whose sum is σ = 464121214704. Its totient is φ = 88404040880.

The previous prime is 221010102193. The next prime is 221010102277. The reversal of 221010102220 is 22201010122.

It is a happy number.

It is a super-3 number, since 3×221010102220³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221010102220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525252536 + ... + 5525252575.

It is an arithmetic number, because the mean of its divisors is an integer number (38676767892).

Almost surely, 2^221010102220 is an apocalyptic number.

221010102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010102220 is an abundant number, since it is smaller than the sum of its proper divisors (243111112484).

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

221010102220 is a wasteful number, since it uses less digits than its factorization.

221010102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050505120 (or 11050505118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221010102220 its reverse (22201010122), we get a palindrome (243211112342).

The spelling of 221010102220 in words is "two hundred twenty-one billion, ten million, one hundred two thousand, two hundred twenty".