21113001302 has 4 divisors (see below), whose sum is σ = 31669501956. Its totient is φ = 10556500650.

The previous prime is 21113001263. The next prime is 21113001307. The reversal of 21113001302 is 20310031112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113001307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278250324 + ... + 5278250327.

It is an arithmetic number, because the mean of its divisors is an integer number (7917375489).

Almost surely, 2^21113001302 is an apocalyptic number.

21113001302 is a deficient number, since it is larger than the sum of its proper divisors (10556500654).

21113001302 is a wasteful number, since it uses less digits than its factorization.

21113001302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556500653.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21113001302 its reverse (20310031112), we get a palindrome (41423032414).

The spelling of 21113001302 in words is "twenty-one billion, one hundred thirteen million, one thousand, three hundred two".