1100111222020 has 48 divisors (see below), whose sum is σ = 2362605562800. Its totient is φ = 430175563776.

The previous prime is 1100111222011. The next prime is 1100111222033. The reversal of 1100111222020 is 202221110011.

It can be written as a sum of positive squares in 8 ways, for example, as 18128468164 + 1081982753856 = 134642^2 + 1040184^2 .

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, 3169095 + ... + 3499054.

It is an arithmetic number, because the mean of its divisors is an integer number (49220949225).

Almost surely, 2^{1100111222020} is an apocalyptic number.

1100111222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100111222020 is an abundant number, since it is smaller than the sum of its proper divisors (1262494340780).

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

1100111222020 is a wasteful number, since it uses less digits than its factorization.

1100111222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6668344 (or 6668342 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1100111222020 its reverse (202221110011), we get a palindrome (1302332332031).

The spelling of 1100111222020 in words is "one trillion, one hundred billion, one hundred eleven million, two hundred twenty-two thousand, twenty".