1121220111020 has 12 divisors (see below), whose sum is σ = 2354562233184. Its totient is φ = 448488044400.

The previous prime is 1121220110939. The next prime is 1121220111023. The reversal of 1121220111020 is 201110221211.

It is a super-2 number, since 2×1121220111020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121220110986 and 1121220111004.

It is not an unprimeable number, because it can be changed into a prime (1121220111023) by changing a digit.

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, 28030502756 + ... + 28030502795.

It is an arithmetic number, because the mean of its divisors is an integer number (196213519432).

Almost surely, 2^{1121220111020} is an apocalyptic number.

1121220111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121220111020 is an abundant number, since it is smaller than the sum of its proper divisors (1233342122164).

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

1121220111020 is a wasteful number, since it uses less digits than its factorization.

1121220111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56061005560 (or 56061005558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121220111020 its reverse (201110221211), we get a palindrome (1322330332231).

The spelling of 1121220111020 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, twenty".