1121122111020 has 24 divisors (see below), whose sum is σ = 3139141911024. Its totient is φ = 298965896256.

The previous prime is 1121122111013. The next prime is 1121122111027. The reversal of 1121122111020 is 201112211211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1121122111013) and next prime (1121122111027).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1121122111027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9342684199 + ... + 9342684318.

It is an arithmetic number, because the mean of its divisors is an integer number (130797579626).

Almost surely, 2^{1121122111020} is an apocalyptic number.

1121122111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121122111020 is an abundant number, since it is smaller than the sum of its proper divisors (2018019800004).

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

1121122111020 is a wasteful number, since it uses less digits than its factorization.

1121122111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18685368529 (or 18685368527 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121122111020 its reverse (201112211211), we get a palindrome (1322234322231).

The spelling of 1121122111020 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred eleven thousand, twenty".