21233010101221 has 8 divisors (see below), whose sum is σ = 22169971787904. Its totient is φ = 20297197359120.

The previous prime is 21233010101207. The next prime is 21233010101243. The reversal of 21233010101221 is 12210101033212.

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

It is a cyclic number.

It is not a de Polignac number, because 21233010101221 - 2³³ = 21224420166629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233010101021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287198370 + ... + 287272291.

It is an arithmetic number, because the mean of its divisors is an integer number (2771246473488).

Almost surely, 2^{21233010101221} is an apocalyptic number.

It is an amenable number.

21233010101221 is a deficient number, since it is larger than the sum of its proper divisors (936961686683).

21233010101221 is a wasteful number, since it uses less digits than its factorization.

21233010101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574472291.

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

Adding to 21233010101221 its reverse (12210101033212), we get a palindrome (33443111134433).

The spelling of 21233010101221 in words is "twenty-one trillion, two hundred thirty-three billion, ten million, one hundred one thousand, two hundred twenty-one".