21220311022 has 8 divisors (see below), whose sum is σ = 32857255872. Its totient is φ = 10267892400.

The previous prime is 21220310999. The next prime is 21220311041. The reversal of 21220311022 is 22011302212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21220310987 and 21220311005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171131479 + ... + 171131602.

It is an arithmetic number, because the mean of its divisors is an integer number (4107156984).

Almost surely, 2^21220311022 is an apocalyptic number.

21220311022 is a deficient number, since it is larger than the sum of its proper divisors (11636944850).

21220311022 is a wasteful number, since it uses less digits than its factorization.

21220311022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342263114.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21220311022 its reverse (22011302212), we get a palindrome (43231613234).

The spelling of 21220311022 in words is "twenty-one billion, two hundred twenty million, three hundred eleven thousand, twenty-two".