21612640775222 has 8 divisors (see below), whose sum is σ = 37050241328976. Its totient is φ = 9262560332232.

The previous prime is 21612640775207. The next prime is 21612640775249. The reversal of 21612640775222 is 22257704621612.

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

It is a super-2 number, since 2×21612640775222² (a number of 27 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 in 3 ways as a sum of consecutive naturals, for example, 771880027673 + ... + 771880027700.

It is an arithmetic number, because the mean of its divisors is an integer number (4631280166122).

Almost surely, 2^{21612640775222} is an apocalyptic number.

21612640775222 is a deficient number, since it is larger than the sum of its proper divisors (15437600553754).

21612640775222 is a wasteful number, since it uses less digits than its factorization.

21612640775222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543760055382.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 21612640775222 in words is "twenty-one trillion, six hundred twelve billion, six hundred forty million, seven hundred seventy-five thousand, two hundred twenty-two".