21233221021101 has 32 divisors (see below), whose sum is σ = 29912052736000. Its totient is φ = 13360498240320.

The previous prime is 21233221021093. The next prime is 21233221021121. The reversal of 21233221021101 is 10112012233212.

It is not a de Polignac number, because 21233221021101 - 2³ = 21233221021093 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 (21233221021121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145169916 + ... + 145316106.

It is an arithmetic number, because the mean of its divisors is an integer number (934751648000).

Almost surely, 2^{21233221021101} is an apocalyptic number.

It is an amenable number.

21233221021101 is a deficient number, since it is larger than the sum of its proper divisors (8678831714899).

21233221021101 is a wasteful number, since it uses less digits than its factorization.

21233221021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155689.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21233221021101 its reverse (10112012233212), we get a palindrome (31345233254313).

The spelling of 21233221021101 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred twenty-one million, twenty-one thousand, one hundred one".