1152346121621 has 4 divisors (see below), whose sum is σ = 1152362654412. Its totient is φ = 1152329588832.

The previous prime is 1152346121581. The next prime is 1152346121653. The reversal of 1152346121621 is 1261216432511.

It is a happy number.

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 399461920900 + 752884200721 = 632030^2 + 867689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1152346121621 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 (1152346124621) 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, 8161400 + ... + 8301393.

It is an arithmetic number, because the mean of its divisors is an integer number (288090663603).

Almost surely, 2^{1152346121621} is an apocalyptic number.

It is an amenable number.

1152346121621 is a deficient number, since it is larger than the sum of its proper divisors (16532791).

1152346121621 is an equidigital number, since it uses as much as digits as its factorization.

1152346121621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16532790.

The product of its digits is 17280, while the sum is 35.

The spelling of 1152346121621 in words is "one trillion, one hundred fifty-two billion, three hundred forty-six million, one hundred twenty-one thousand, six hundred twenty-one".