21222052413628 has 96 divisors (see below), whose sum is σ = 41904053134272. Its totient is φ = 9322100736000.

The previous prime is 21222052413607. The next prime is 21222052413629. The reversal of 21222052413628 is 82631425022212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222052413629) 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, 45224250 + ... + 45691102.

It is an arithmetic number, because the mean of its divisors is an integer number (436500553482).

Almost surely, 2^{21222052413628} is an apocalyptic number.

It is an amenable number.

21222052413628 is a deficient number, since it is larger than the sum of its proper divisors (20682000720644).

21222052413628 is a wasteful number, since it uses less digits than its factorization.

21222052413628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467215 (or 467213 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 21222052413628 in words is "twenty-one trillion, two hundred twenty-two billion, fifty-two million, four hundred thirteen thousand, six hundred twenty-eight".