1121121012020 has 12 divisors (see below), whose sum is σ = 2354354125284. Its totient is φ = 448448404800.

The previous prime is 1121121012017. The next prime is 1121121012031. The reversal of 1121121012020 is 202101211211.

It can be written as a sum of positive squares in 2 ways, for example, as 335465689636 + 785655322384 = 579194^2 + 886372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1121121011986 and 1121121012004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28028025281 + ... + 28028025320.

It is an arithmetic number, because the mean of its divisors is an integer number (196196177107).

Almost surely, 2^{1121121012020} is an apocalyptic number.

1121121012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121121012020 is an abundant number, since it is smaller than the sum of its proper divisors (1233233113264).

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

1121121012020 is a wasteful number, since it uses less digits than its factorization.

1121121012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56056050610 (or 56056050608 counting only the distinct ones).

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

Adding to 1121121012020 its reverse (202101211211), we get a palindrome (1323222223231).

The spelling of 1121121012020 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, twelve thousand, twenty".