1228982293621 has 4 divisors (see below), whose sum is σ = 1241150435244. Its totient is φ = 1216814152000.

The previous prime is 1228982293601. The next prime is 1228982293667. The reversal of 1228982293621 is 1263922898221.

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 1155003733521 + 73978560100 = 1074711^2 + 271990^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228982293621 - 2¹⁷ = 1228982162549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228982293601) 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, 6084070660 + ... + 6084070861.

It is an arithmetic number, because the mean of its divisors is an integer number (310287608811).

Almost surely, 2^{1228982293621} is an apocalyptic number.

It is an amenable number.

1228982293621 is a deficient number, since it is larger than the sum of its proper divisors (12168141623).

1228982293621 is a wasteful number, since it uses less digits than its factorization.

1228982293621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12168141622.

The product of its digits is 2985984, while the sum is 55.

The spelling of 1228982293621 in words is "one trillion, two hundred twenty-eight billion, nine hundred eighty-two million, two hundred ninety-three thousand, six hundred twenty-one".