21220132213132 has 24 divisors (see below), whose sum is σ = 38364485870592. Its totient is φ = 10259410246800.

The previous prime is 21220132213121. The next prime is 21220132213141. The reversal of 21220132213132 is 23131223102212.

It is a super-2 number, since 2×21220132213132² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220132213097 and 21220132213106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69811594 + ... + 70114897.

It is an arithmetic number, because the mean of its divisors is an integer number (1598520244608).

Almost surely, 2^{21220132213132} is an apocalyptic number.

It is an amenable number.

21220132213132 is a deficient number, since it is larger than the sum of its proper divisors (17144353657460).

21220132213132 is a wasteful number, since it uses less digits than its factorization.

21220132213132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139927749 (or 139927747 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21220132213132 its reverse (23131223102212), we get a palindrome (44351355315344).

The spelling of 21220132213132 in words is "twenty-one trillion, two hundred twenty billion, one hundred thirty-two million, two hundred thirteen thousand, one hundred thirty-two".