21226330662 has 64 divisors (see below), whose sum is σ = 48469881600. Its totient is φ = 6154859520.

The previous prime is 21226330603. The next prime is 21226330663. The reversal of 21226330662 is 26603362212.

It is a super-2 number, since 2×21226330662² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21226330663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54112 + ... + 213027.

It is an arithmetic number, because the mean of its divisors is an integer number (757341900).

Almost surely, 2^21226330662 is an apocalyptic number.

21226330662 is an abundant number, since it is smaller than the sum of its proper divisors (27243550938).

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

21226330662 is a wasteful number, since it uses less digits than its factorization.

21226330662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267221.

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 21226330662 its reverse (26603362212), we get a palindrome (47829692874).

The spelling of 21226330662 in words is "twenty-one billion, two hundred twenty-six million, three hundred thirty thousand, six hundred sixty-two".