21033221221301 has 8 divisors (see below), whose sum is σ = 21947764295040. Its totient is φ = 20118682747152.

The previous prime is 21033221221241. The next prime is 21033221221307. The reversal of 21033221221301 is 10312212233012.

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 21033221221301 - 2²⁶ = 21033154112437 is a prime.

It is a super-2 number, since 2×21033221221301² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033221221307) 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, 10866440 + ... + 12654878.

It is an arithmetic number, because the mean of its divisors is an integer number (2743470536880).

Almost surely, 2^{21033221221301} is an apocalyptic number.

It is an amenable number.

21033221221301 is a deficient number, since it is larger than the sum of its proper divisors (914543073739).

21033221221301 is a wasteful number, since it uses less digits than its factorization.

21033221221301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299795.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21033221221301 its reverse (10312212233012), we get a palindrome (31345433454313).

The spelling of 21033221221301 in words is "twenty-one trillion, thirty-three billion, two hundred twenty-one million, two hundred twenty-one thousand, three hundred one".