21221121123301 has 8 divisors (see below), whose sum is σ = 23542692156000. Its totient is φ = 18964946457840.

The previous prime is 21221121123259. The next prime is 21221121123311. The reversal of 21221121123301 is 10332112112212.

It is a happy number.

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 21221121123301 - 2⁷ = 21221121123173 is a prime.

It is a super-3 number, since 3×21221121123301³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221121123311) 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, 16349091126 + ... + 16349092423.

It is an arithmetic number, because the mean of its divisors is an integer number (2942836519500).

Almost surely, 2^{21221121123301} is an apocalyptic number.

It is an amenable number.

21221121123301 is a deficient number, since it is larger than the sum of its proper divisors (2321571032699).

21221121123301 is a wasteful number, since it uses less digits than its factorization.

21221121123301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32698183619.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21221121123301 its reverse (10332112112212), we get a palindrome (31553233235513).

The spelling of 21221121123301 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-three thousand, three hundred one".