21403310412 has 48 divisors (see below), whose sum is σ = 54564048000. Its totient is φ = 6475983360.

The previous prime is 21403310371. The next prime is 21403310417. The reversal of 21403310412 is 21401330412.

It is not an unprimeable number, because it can be changed into a prime (21403310417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36037 + ... + 210012.

It is an arithmetic number, because the mean of its divisors is an integer number (1136751000).

Almost surely, 2^21403310412 is an apocalyptic number.

21403310412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21403310412 is an abundant number, since it is smaller than the sum of its proper divisors (33160737588).

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

21403310412 is a wasteful number, since it uses less digits than its factorization.

21403310412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246726 (or 246724 counting only the distinct ones).

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

Adding to 21403310412 its reverse (21401330412), we get a palindrome (42804640824).

The spelling of 21403310412 in words is "twenty-one billion, four hundred three million, three hundred ten thousand, four hundred twelve".