12354025021 has 8 divisors (see below), whose sum is σ = 13330479960. Its totient is φ = 11381305152.

The previous prime is 12354025009. The next prime is 12354025031. The reversal of 12354025021 is 12052045321.

It can be written as a sum of positive squares in 4 ways, for example, as 3598680121 + 8755344900 = 59989^2 + 93570^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12354025021 - 2⁹ = 12354024509 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 (12354025031) 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 7 ways as a sum of consecutive naturals, for example, 926890 + ... + 940123.

It is an arithmetic number, because the mean of its divisors is an integer number (1666309995).

Almost surely, 2^12354025021 is an apocalyptic number.

It is an amenable number.

12354025021 is a deficient number, since it is larger than the sum of its proper divisors (976454939).

12354025021 is a wasteful number, since it uses less digits than its factorization.

12354025021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867535.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 12354025021 in words is "twelve billion, three hundred fifty-four million, twenty-five thousand, twenty-one".