21214148312 has 32 divisors (see below), whose sum is σ = 45463572000. Its totient is φ = 9090841344.

The previous prime is 21214148281. The next prime is 21214148323. The reversal of 21214148312 is 21384141212.

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, 1005908 + ... + 1026780.

It is an arithmetic number, because the mean of its divisors is an integer number (1420736625).

Almost surely, 2^21214148312 is an apocalyptic number.

It is an amenable number.

21214148312 is an abundant number, since it is smaller than the sum of its proper divisors (24249423688).

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

21214148312 is a wasteful number, since it uses less digits than its factorization.

21214148312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39035 (or 39031 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

Adding to 21214148312 its reverse (21384141212), we get a palindrome (42598289524).

The spelling of 21214148312 in words is "twenty-one billion, two hundred fourteen million, one hundred forty-eight thousand, three hundred twelve".