2221111200220 has 96 divisors (see below), whose sum is σ = 5173444253376. Its totient is φ = 794180505600.

The previous prime is 2221111200199. The next prime is 2221111200241. The reversal of 2221111200220 is 220021111222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2221111200199) and next prime (2221111200241).

It is a junction number, because it is equal to n+sod(n) for n = 2221111200194 and 2221111200203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44435482 + ... + 44485438.

It is an arithmetic number, because the mean of its divisors is an integer number (53890044306).

Almost surely, 2^{2221111200220} is an apocalyptic number.

2221111200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221111200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2586722126688).

2221111200220 is an abundant number, since it is smaller than the sum of its proper divisors (2952333053156).

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

2221111200220 is a wasteful number, since it uses less digits than its factorization.

2221111200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53351 (or 53349 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221111200220 its reverse (220021111222), we get a palindrome (2441132311442).

The spelling of 2221111200220 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, two hundred thousand, two hundred twenty".