21021220123033 has 8 divisors (see below), whose sum is σ = 22773795363648. Its totient is φ = 19288010355024.

The previous prime is 21021220123027. The next prime is 21021220123039. The reversal of 21021220123033 is 33032102212012.

It is an interprime number because it is at equal distance from previous prime (21021220123027) and next prime (21021220123039).

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 21021220123033 - 2³³ = 21012630188441 is a prime.

It is a super-2 number, since 2×21021220123033² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21021220122995 and 21021220123013.

It is not an unprimeable number, because it can be changed into a prime (21021220123039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4841365891 + ... + 4841370232.

It is an arithmetic number, because the mean of its divisors is an integer number (2846724420456).

Almost surely, 2^{21021220123033} is an apocalyptic number.

It is an amenable number.

21021220123033 is a deficient number, since it is larger than the sum of its proper divisors (1752575240615).

21021220123033 is a wasteful number, since it uses less digits than its factorization.

21021220123033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9682736303.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21021220123033 its reverse (33032102212012), we get a palindrome (54053322335045).

The spelling of 21021220123033 in words is "twenty-one trillion, twenty-one billion, two hundred twenty million, one hundred twenty-three thousand, thirty-three".