1122100220020 has 24 divisors (see below), whose sum is σ = 2537672805864. Its totient is φ = 414313927296.

The previous prime is 1122100220011. The next prime is 1122100220041. The reversal of 1122100220020 is 200220012211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8560320484 + 1113539899536 = 92522^2 + 1055244^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 2157884779 + ... + 2157885298.

It is an arithmetic number, because the mean of its divisors is an integer number (105736366911).

Almost surely, 2^{1122100220020} is an apocalyptic number.

1122100220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122100220020 is an abundant number, since it is smaller than the sum of its proper divisors (1415572585844).

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

1122100220020 is a wasteful number, since it uses less digits than its factorization.

1122100220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315770099 (or 4315770097 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1122100220020 its reverse (200220012211), we get a palindrome (1322320232231).

The spelling of 1122100220020 in words is "one trillion, one hundred twenty-two billion, one hundred million, two hundred twenty thousand, twenty".