1121819929181 has 48 divisors (see below), whose sum is σ = 1351772674560. Its totient is φ = 927300648960.

The previous prime is 1121819929147. The next prime is 1121819929189. The reversal of 1121819929181 is 1819299181211.

It is a de Polignac number, because none of the positive numbers 2^k-1121819929181 is a prime.

It is a super-2 number, since 2×1121819929181² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121819929189) 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, 786137990 + ... + 786139416.

It is an arithmetic number, because the mean of its divisors is an integer number (28161930720).

Almost surely, 2^{1121819929181} is an apocalyptic number.

It is an amenable number.

1121819929181 is a deficient number, since it is larger than the sum of its proper divisors (229952745379).

1121819929181 is a wasteful number, since it uses less digits than its factorization.

1121819929181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914 (or 2907 counting only the distinct ones).

The product of its digits is 186624, while the sum is 53.

The spelling of 1121819929181 in words is "one trillion, one hundred twenty-one billion, eight hundred nineteen million, nine hundred twenty-nine thousand, one hundred eighty-one".