21332402222 has 4 divisors (see below), whose sum is σ = 31998603336. Its totient is φ = 10666201110.

The previous prime is 21332402219. The next prime is 21332402239. The reversal of 21332402222 is 22220423312.

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

It is a super-2 number, since 2×21332402222² (a number of 21 digits) contains 22 as substring.

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, 5333100554 + ... + 5333100557.

It is an arithmetic number, because the mean of its divisors is an integer number (7999650834).

Almost surely, 2^21332402222 is an apocalyptic number.

21332402222 is a deficient number, since it is larger than the sum of its proper divisors (10666201114).

21332402222 is a wasteful number, since it uses less digits than its factorization.

21332402222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666201113.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21332402222 its reverse (22220423312), we get a palindrome (43552825534).

The spelling of 21332402222 in words is "twenty-one billion, three hundred thirty-two million, four hundred two thousand, two hundred twenty-two".