21132220422322 has 4 divisors (see below), whose sum is σ = 31698330633486. Its totient is φ = 10566110211160.

The previous prime is 21132220422319. The next prime is 21132220422359. The reversal of 21132220422322 is 22322402223112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13132933875721 + 7999286546601 = 3623939^2 + 2828301^2 .

It is a super-3 number, since 3×21132220422322³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5283055105579 + ... + 5283055105582.

Almost surely, 2^{21132220422322} is an apocalyptic number.

21132220422322 is a deficient number, since it is larger than the sum of its proper divisors (10566110211164).

21132220422322 is a wasteful number, since it uses less digits than its factorization.

21132220422322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566110211163.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21132220422322 its reverse (22322402223112), we get a palindrome (43454622645434).

The spelling of 21132220422322 in words is "twenty-one trillion, one hundred thirty-two billion, two hundred twenty million, four hundred twenty-two thousand, three hundred twenty-two".