21223033122 has 8 divisors (see below), whose sum is σ = 42446066256. Its totient is φ = 7074344372.

The previous prime is 21223033109. The next prime is 21223033127. The reversal of 21223033122 is 22133032212.

It is a happy number.

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

21223033122 is an admirable number.

It is a super-3 number, since 3×21223033122³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21223033127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768586088 + ... + 1768586099.

It is an arithmetic number, because the mean of its divisors is an integer number (5305758282).

Almost surely, 2^21223033122 is an apocalyptic number.

21223033122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21223033122 is a wasteful number, since it uses less digits than its factorization.

21223033122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537172192.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21223033122 its reverse (22133032212), we get a palindrome (43356065334).

The spelling of 21223033122 in words is "twenty-one billion, two hundred twenty-three million, thirty-three thousand, one hundred twenty-two".