21612627166106 has 16 divisors (see below), whose sum is σ = 32487831202848. Its totient is φ = 10783374210000.

The previous prime is 21612627166099. The next prime is 21612627166127. The reversal of 21612627166106 is 60166172621612.

It is a super-2 number, since 2×21612627166106² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4233920 + ... + 7819931.

It is an arithmetic number, because the mean of its divisors is an integer number (2030489450178).

Almost surely, 2^{21612627166106} is an apocalyptic number.

21612627166106 is a deficient number, since it is larger than the sum of its proper divisors (10875204036742).

21612627166106 is a wasteful number, since it uses less digits than its factorization.

21612627166106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12055757.

The product of its (nonzero) digits is 435456, while the sum is 47.

Adding to 21612627166106 its reverse (60166172621612), we get a palindrome (81778799787718).

The spelling of 21612627166106 in words is "twenty-one trillion, six hundred twelve billion, six hundred twenty-seven million, one hundred sixty-six thousand, one hundred six".