1121110020 has 36 divisors (see below), whose sum is σ = 3400700940. Its totient is φ = 298962624.

The previous prime is 1121110013. The next prime is 1121110021. The reversal of 1121110020 is 200111211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 875686464 + 245423556 = 29592^2 + 15666^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1121109984 and 1121110011.

It is not an unprimeable number, because it can be changed into a prime (1121110021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3114015 + ... + 3114374.

It is an arithmetic number, because the mean of its divisors is an integer number (94463915).

Almost surely, 2^1121110020 is an apocalyptic number.

1121110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121110020 is an abundant number, since it is smaller than the sum of its proper divisors (2279590920).

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

1121110020 is a wasteful number, since it uses less digits than its factorization.

1121110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228404 (or 6228399 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1121110020 is about 33482.9810500798. The cubic root of 1121110020 is about 1038.8417887758.

Adding to 1121110020 its reverse (200111211), we get a palindrome (1321221231).

The spelling of 1121110020 in words is "one billion, one hundred twenty-one million, one hundred ten thousand, twenty".