21333220122201 has 24 divisors (see below), whose sum is σ = 30807023179680. Its totient is φ = 13125408581376.

The previous prime is 21333220122173. The next prime is 21333220122281. The reversal of 21333220122201 is 10222102233312.

It is not a de Polignac number, because 21333220122201 - 2¹⁰ = 21333220121177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21333220122281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1925371 + ... + 6809808.

It is an arithmetic number, because the mean of its divisors is an integer number (1283625965820).

Almost surely, 2^{21333220122201} is an apocalyptic number.

It is an amenable number.

21333220122201 is a deficient number, since it is larger than the sum of its proper divisors (9473803057479).

21333220122201 is a wasteful number, since it uses less digits than its factorization.

21333220122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740025 (or 8740012 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21333220122201 its reverse (10222102233312), we get a palindrome (31555322355513).

The spelling of 21333220122201 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred twenty million, one hundred twenty-two thousand, two hundred one".