21011321212234 has 8 divisors (see below), whose sum is σ = 31710337535520. Its totient is φ = 10441208700396.

The previous prime is 21011321212153. The next prime is 21011321212289. The reversal of 21011321212234 is 43221212311012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21011321212199 and 21011321212208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32225952454 + ... + 32225953105.

It is an arithmetic number, because the mean of its divisors is an integer number (3963792191940).

Almost surely, 2^{21011321212234} is an apocalyptic number.

21011321212234 is a deficient number, since it is larger than the sum of its proper divisors (10699016323286).

21011321212234 is a wasteful number, since it uses less digits than its factorization.

21011321212234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64451905724.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21011321212234 its reverse (43221212311012), we get a palindrome (64232533523246).

The spelling of 21011321212234 in words is "twenty-one trillion, eleven billion, three hundred twenty-one million, two hundred twelve thousand, two hundred thirty-four".