1121940653089 has 3 divisors (see below), whose sum is σ = 1121941712307. Its totient is φ = 1121939593872.

The previous prime is 1121940653047. The next prime is 1121940653123. The reversal of 1121940653089 is 9803560491211.

It is a happy number.

The square root of 1121940653089 is 1059217.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 15253485025 + 1106687168064 = 123505^2 + 1051992^2 .

It is not a de Polignac number, because 1121940653089 - 2¹⁵ = 1121940620321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121940653389) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 529609 + ... + 1588825.

It is an arithmetic number, because the mean of its divisors is an integer number (373980570769).

Almost surely, 2^{1121940653089} is an apocalyptic number.

1121940653089 is the 1059217-th square number.

1121940653089 is the 529609-th centered octagonal number.

It is an amenable number.

1121940653089 is a deficient number, since it is larger than the sum of its proper divisors (1059218).

1121940653089 is an frugal number, since it uses more digits than its factorization.

1121940653089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118434 (or 1059217 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

Multiplying 1121940653089 by its sum of digits (49), we get a square (54975092001361 = 7414519²).

The spelling of 1121940653089 in words is "one trillion, one hundred twenty-one billion, nine hundred forty million, six hundred fifty-three thousand, eighty-nine".