1121010020109 has 48 divisors (see below), whose sum is σ = 1856228474880. Its totient is φ = 638616713760.

The previous prime is 1121010020069. The next prime is 1121010020131. The reversal of 1121010020109 is 9010200101211.

It is a happy number.

It is not a de Polignac number, because 1121010020109 - 2⁸ = 1121010019853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121010020091 and 1121010020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121010020209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27474894 + ... + 27515664.

It is an arithmetic number, because the mean of its divisors is an integer number (38671426560).

Almost surely, 2^{1121010020109} is an apocalyptic number.

It is an amenable number.

1121010020109 is a deficient number, since it is larger than the sum of its proper divisors (735218454771).

1121010020109 is a wasteful number, since it uses less digits than its factorization.

1121010020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42110 (or 42107 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 1121010020109 in words is "one trillion, one hundred twenty-one billion, ten million, twenty thousand, one hundred nine".