21401113402 has 8 divisors (see below), whose sum is σ = 32107238496. Its totient is φ = 10698700572.

The previous prime is 21401113397. The next prime is 21401113403. The reversal of 21401113402 is 20431110412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21401113402.

It is not an unprimeable number, because it can be changed into a prime (21401113403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913608 + ... + 936739.

It is an arithmetic number, because the mean of its divisors is an integer number (4013404812).

Almost surely, 2^21401113402 is an apocalyptic number.

21401113402 is a deficient number, since it is larger than the sum of its proper divisors (10706125094).

21401113402 is a wasteful number, since it uses less digits than its factorization.

21401113402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856132.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21401113402 its reverse (20431110412), we get a palindrome (41832223814).

The spelling of 21401113402 in words is "twenty-one billion, four hundred one million, one hundred thirteen thousand, four hundred two".