21021132020032 has 14 divisors (see below), whose sum is σ = 41713808852378. Its totient is φ = 10510566009984.

The previous prime is 21021132020029. The next prime is 21021132020047. The reversal of 21021132020032 is 23002023112012.

It can be written as a sum of positive squares in only one way, i.e., 15172396070976 + 5848735949056 = 3895176^2 + 2418416^2 .

It is a super-2 number, since 2×21021132020032² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21021132019991 and 21021132020009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164227593843 + ... + 164227593970.

Almost surely, 2^{21021132020032} is an apocalyptic number.

It is an amenable number.

21021132020032 is a deficient number, since it is larger than the sum of its proper divisors (20692676832346).

21021132020032 is an equidigital number, since it uses as much as digits as its factorization.

21021132020032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328455187825 (or 328455187815 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21021132020032 its reverse (23002023112012), we get a palindrome (44023155132044).

The spelling of 21021132020032 in words is "twenty-one trillion, twenty-one billion, one hundred thirty-two million, twenty thousand, thirty-two".