21233001212011 has 8 divisors (see below), whose sum is σ = 21401861670000. Its totient is φ = 21064492182240.

The previous prime is 21233001211993. The next prime is 21233001212041. The reversal of 21233001212011 is 11021210033212.

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-21233001212011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21233001212011.

It is not an unprimeable number, because it can be changed into a prime (21233001212041) 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, 87735736 + ... + 87977413.

It is an arithmetic number, because the mean of its divisors is an integer number (2675232708750).

Almost surely, 2^{21233001212011} is an apocalyptic number.

21233001212011 is a deficient number, since it is larger than the sum of its proper divisors (168860457989).

21233001212011 is a wasteful number, since it uses less digits than its factorization.

21233001212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175714109.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21233001212011 its reverse (11021210033212), we get a palindrome (32254211245223).

The spelling of 21233001212011 in words is "twenty-one trillion, two hundred thirty-three billion, one million, two hundred twelve thousand, eleven".