21340223202 has 8 divisors (see below), whose sum is σ = 42680446416. Its totient is φ = 7113407732.

The previous prime is 21340223171. The next prime is 21340223227. The reversal of 21340223202 is 20232204312.

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

21340223202 is an admirable number.

It is a super-2 number, since 2×21340223202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1778351928 + ... + 1778351939.

It is an arithmetic number, because the mean of its divisors is an integer number (5335055802).

Almost surely, 2^21340223202 is an apocalyptic number.

21340223202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21340223202 is a wasteful number, since it uses less digits than its factorization.

21340223202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556703872.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21340223202 its reverse (20232204312), we get a palindrome (41572427514).

The spelling of 21340223202 in words is "twenty-one billion, three hundred forty million, two hundred twenty-three thousand, two hundred two".