21300412412 has 24 divisors (see below), whose sum is σ = 39733318800. Its totient is φ = 9956445440.

The previous prime is 21300412351. The next prime is 21300412421. The reversal of 21300412412 is 21421400312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041014 + ... + 1061277.

It is an arithmetic number, because the mean of its divisors is an integer number (1655554950).

Almost surely, 2^21300412412 is an apocalyptic number.

It is an amenable number.

21300412412 is a deficient number, since it is larger than the sum of its proper divisors (18432906388).

21300412412 is a wasteful number, since it uses less digits than its factorization.

21300412412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102461 (or 2102459 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21300412412 its reverse (21421400312), we get a palindrome (42721812724).

The spelling of 21300412412 in words is "twenty-one billion, three hundred million, four hundred twelve thousand, four hundred twelve".