21825003212 has 12 divisors (see below), whose sum is σ = 38196718560. Its totient is φ = 10911655056.

The previous prime is 21825003169. The next prime is 21825003269. The reversal of 21825003212 is 21230052812.

It is an unprimeable number.

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, 151748 + ... + 258219.

It is an arithmetic number, because the mean of its divisors is an integer number (3183059880).

Almost surely, 2^21825003212 is an apocalyptic number.

It is an amenable number.

21825003212 is a deficient number, since it is larger than the sum of its proper divisors (16371715348).

21825003212 is a wasteful number, since it uses less digits than its factorization.

21825003212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423280 (or 423278 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 21825003212 in words is "twenty-one billion, eight hundred twenty-five million, three thousand, two hundred twelve".