21301322412 has 24 divisors (see below), whose sum is σ = 49705754112. Its totient is φ = 7100059600.

The previous prime is 21301322381. The next prime is 21301322431. The reversal of 21301322412 is 21422310312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269737 + ... + 339647.

It is an arithmetic number, because the mean of its divisors is an integer number (2071073088).

Almost surely, 2^21301322412 is an apocalyptic number.

It is an amenable number.

21301322412 is an abundant number, since it is smaller than the sum of its proper divisors (28404431700).

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

21301322412 is a wasteful number, since it uses less digits than its factorization.

21301322412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95309 (or 95307 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21301322412 its reverse (21422310312), we get a palindrome (42723632724).

The spelling of 21301322412 in words is "twenty-one billion, three hundred one million, three hundred twenty-two thousand, four hundred twelve".