21066122034 has 16 divisors (see below), whose sum is σ = 46813604640. Its totient is φ = 7022040660.

The previous prime is 21066122003. The next prime is 21066122057. The reversal of 21066122034 is 43022166012.

21066122034 is a `hidden beast` number, since 2 + 10 + 6 + 612 + 2 + 0 + 34 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21066121989 and 21066122007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195056632 + ... + 195056739.

It is an arithmetic number, because the mean of its divisors is an integer number (2925850290).

Almost surely, 2^21066122034 is an apocalyptic number.

21066122034 is an abundant number, since it is smaller than the sum of its proper divisors (25747482606).

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

21066122034 is a wasteful number, since it uses less digits than its factorization.

21066122034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390113382 (or 390113376 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 21066122034 its reverse (43022166012), we get a palindrome (64088288046).

The spelling of 21066122034 in words is "twenty-one billion, sixty-six million, one hundred twenty-two thousand, thirty-four".