21031213301 has 8 divisors (see below), whose sum is σ = 24037036800. Its totient is φ = 18025730928.

The previous prime is 21031213283. The next prime is 21031213309. The reversal of 21031213301 is 10331213012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21031213301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21031213301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031213309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64340 + ... + 214946.

It is an arithmetic number, because the mean of its divisors is an integer number (3004629600).

Almost surely, 2^21031213301 is an apocalyptic number.

It is an amenable number.

21031213301 is a deficient number, since it is larger than the sum of its proper divisors (3005823499).

21031213301 is a wasteful number, since it uses less digits than its factorization.

21031213301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170563.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21031213301 its reverse (10331213012), we get a palindrome (31362426313).

The spelling of 21031213301 in words is "twenty-one billion, thirty-one million, two hundred thirteen thousand, three hundred one".