12222221111020 has 48 divisors (see below), whose sum is σ = 26552164312800. Its totient is φ = 4720227402240.

The previous prime is 12222221110969. The next prime is 12222221111039. The reversal of 12222221111020 is 2011112222221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44389936 + ... + 44664424.

It is an arithmetic number, because the mean of its divisors is an integer number (553170089850).

Almost surely, 2^{12222221111020} is an apocalyptic number.

12222221111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222221111020 is an abundant number, since it is smaller than the sum of its proper divisors (14329943201780).

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

12222221111020 is a wasteful number, since it uses less digits than its factorization.

12222221111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351298 (or 351296 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12222221111020 its reverse (2011112222221), we get a palindrome (14233333333241).

The spelling of 12222221111020 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, twenty".