1122111212020 has 24 divisors (see below), whose sum is σ = 2356614071784. Its totient is φ = 448810098816.

The previous prime is 1122111211997. The next prime is 1122111212039. The reversal of 1122111212020 is 202121112211.

It can be written as a sum of positive squares in 4 ways, for example, as 465421399524 + 656689812496 = 682218^2 + 810364^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1122111211985 and 1122111212003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880719 + ... + 2404438.

It is an arithmetic number, because the mean of its divisors is an integer number (98192252991).

Almost surely, 2^{1122111212020} is an apocalyptic number.

1122111212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122111212020 is an abundant number, since it is smaller than the sum of its proper divisors (1234502859764).

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

1122111212020 is a wasteful number, since it uses less digits than its factorization.

1122111212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298259 (or 4298257 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1122111212020 its reverse (202121112211), we get a palindrome (1324232324231).

It can be divided in two parts, 112211 and 1212020, that added together give a palindrome (1324231).

The spelling of 1122111212020 in words is "one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twelve thousand, twenty".