21221222001033 has 32 divisors (see below), whose sum is σ = 30619194076800. Its totient is φ = 13029443481600.

The previous prime is 21221222000987. The next prime is 21221222001037. The reversal of 21221222001033 is 33010022212212.

It is not a de Polignac number, because 21221222001033 - 2⁹ = 21221222000521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21221222001037) 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, 15500848 + ... + 16814241.

It is an arithmetic number, because the mean of its divisors is an integer number (956849814900).

Almost surely, 2^{21221222001033} is an apocalyptic number.

It is an amenable number.

21221222001033 is a deficient number, since it is larger than the sum of its proper divisors (9397972075767).

21221222001033 is a wasteful number, since it uses less digits than its factorization.

21221222001033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32315433.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21221222001033 its reverse (33010022212212), we get a palindrome (54231244213245).

The spelling of 21221222001033 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred twenty-two million, one thousand, thirty-three".