21401113302 has 32 divisors (see below), whose sum is σ = 47628776160. Its totient is φ = 7123092480.

The previous prime is 21401113229. The next prime is 21401113313. The reversal of 21401113302 is 20331110412.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258099 + ... + 330782.

It is an arithmetic number, because the mean of its divisors is an integer number (1488399255).

Almost surely, 2^21401113302 is an apocalyptic number.

21401113302 is an abundant number, since it is smaller than the sum of its proper divisors (26227662858).

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

21401113302 is a wasteful number, since it uses less digits than its factorization.

21401113302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589565 (or 589559 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21401113302 its reverse (20331110412), we get a palindrome (41732223714).

The spelling of 21401113302 in words is "twenty-one billion, four hundred one million, one hundred thirteen thousand, three hundred two".