1123067645621 has 4 divisors (see below), whose sum is σ = 1128768496812. Its totient is φ = 1117366794432.

The previous prime is 1123067645617. The next prime is 1123067645641. The reversal of 1123067645621 is 1265467603211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 809209992721 + 313857652900 = 899561^2 + 560230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123067645621 - 2² = 1123067645617 is a prime.

It is a super-2 number, since 2×1123067645621² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123067645641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2850425300 + ... + 2850425693.

It is an arithmetic number, because the mean of its divisors is an integer number (282192124203).

Almost surely, 2^{1123067645621} is an apocalyptic number.

It is an amenable number.

1123067645621 is a deficient number, since it is larger than the sum of its proper divisors (5700851191).

1123067645621 is an equidigital number, since it uses as much as digits as its factorization.

1123067645621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700851190.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 1123067645621 in words is "one trillion, one hundred twenty-three billion, sixty-seven million, six hundred forty-five thousand, six hundred twenty-one".