21113000302406 has 4 divisors (see below), whose sum is σ = 31669500453612. Its totient is φ = 10556500151202.

The previous prime is 21113000302391. The next prime is 21113000302417. The reversal of 21113000302406 is 60420300031112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278250075600 + ... + 5278250075603.

It is an arithmetic number, because the mean of its divisors is an integer number (7917375113403).

Almost surely, 2^{21113000302406} is an apocalyptic number.

21113000302406 is a deficient number, since it is larger than the sum of its proper divisors (10556500151206).

21113000302406 is a wasteful number, since it uses less digits than its factorization.

21113000302406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556500151205.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21113000302406 its reverse (60420300031112), we get a palindrome (81533300333518).

The spelling of 21113000302406 in words is "twenty-one trillion, one hundred thirteen billion, three hundred two thousand, four hundred six".