2211222122220 has 48 divisors (see below), whose sum is σ = 6358757676768. Its totient is φ = 573722496000.

The previous prime is 2211222122209. The next prime is 2211222122269. The reversal of 2211222122220 is 222212221122.

It is a super-3 number, since 3×2211222122220³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498020781 + ... + 498025220.

It is an arithmetic number, because the mean of its divisors is an integer number (132474118266).

Almost surely, 2^{2211222122220} is an apocalyptic number.

2211222122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211222122220 is an abundant number, since it is smaller than the sum of its proper divisors (4147535554548).

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

2211222122220 is a wasteful number, since it uses less digits than its factorization.

2211222122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996046050 (or 996046048 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2211222122220 its reverse (222212221122), we get a palindrome (2433434343342).

The spelling of 2211222122220 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".