2211222210020 has 12 divisors (see below), whose sum is σ = 4643566641084. Its totient is φ = 884488884000.

The previous prime is 2211222210011. The next prime is 2211222210073. The reversal of 2211222210020 is 200122221122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 257533920484 + 1953688289536 = 507478^2 + 1397744^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55280555231 + ... + 55280555270.

It is an arithmetic number, because the mean of its divisors is an integer number (386963886757).

Almost surely, 2^{2211222210020} is an apocalyptic number.

2211222210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211222210020 is an abundant number, since it is smaller than the sum of its proper divisors (2432344431064).

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

2211222210020 is a wasteful number, since it uses less digits than its factorization.

2211222210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110561110510 (or 110561110508 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2211222210020 its reverse (200122221122), we get a palindrome (2411344431142).

It can be divided in two parts, 2211222 and 210020, that added together give a palindrome (2421242).

The spelling of 2211222210020 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, two hundred ten thousand, twenty".