2211222110220 has 72 divisors (see below), whose sum is σ = 6773783430960. Its totient is φ = 583821014400.

The previous prime is 2211222110189. The next prime is 2211222110233. The reversal of 2211222110220 is 220112221122.

It is a happy number.

2211222110220 is a `hidden beast` number, since 2 + 211 + 2 + 221 + 10 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2211222110193 and 2211222110202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60796510 + ... + 60832869.

It is an arithmetic number, because the mean of its divisors is an integer number (94080325430).

Almost surely, 2^{2211222110220} is an apocalyptic number.

2211222110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211222110220 is an abundant number, since it is smaller than the sum of its proper divisors (4562561320740).

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

2211222110220 is a wasteful number, since it uses less digits than its factorization.

2211222110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121629495 (or 121629490 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2211222110220 its reverse (220112221122), we get a palindrome (2431334331342).

It can be divided in two parts, 22112221102 and 20, that added together give a palindrome (22112221122).

The spelling of 2211222110220 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred ten thousand, two hundred twenty".