12921020899150 has 48 divisors (see below), whose sum is σ = 29579198622624. Its totient is φ = 4089290129280.

The previous prime is 12921020899139. The next prime is 12921020899169. The reversal of 12921020899150 is 5199802012921.

It is a junction number, because it is equal to n+sod(n) for n = 12921020899094 and 12921020899103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1419887857 + ... + 1419896956.

It is an arithmetic number, because the mean of its divisors is an integer number (616233304638).

Almost surely, 2^{12921020899150} is an apocalyptic number.

12921020899150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12921020899150 is an abundant number, since it is smaller than the sum of its proper divisors (16658177723474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12921020899150 is a wasteful number, since it uses less digits than its factorization.

12921020899150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839784845 (or 2839784840 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 49.

The spelling of 12921020899150 in words is "twelve trillion, nine hundred twenty-one billion, twenty million, eight hundred ninety-nine thousand, one hundred fifty".