21061410622 has 16 divisors (see below), whose sum is σ = 36985892832. Its totient is φ = 8806164480.

The previous prime is 21061410613. The next prime is 21061410649. The reversal of 21061410622 is 22601416012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18345603 + ... + 18346750.

It is an arithmetic number, because the mean of its divisors is an integer number (2311618302).

Almost surely, 2^21061410622 is an apocalyptic number.

21061410622 is a deficient number, since it is larger than the sum of its proper divisors (15924482210).

21061410622 is a wasteful number, since it uses less digits than its factorization.

21061410622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36692403.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21061410622 its reverse (22601416012), we get a palindrome (43662826634).

The spelling of 21061410622 in words is "twenty-one billion, sixty-one million, four hundred ten thousand, six hundred twenty-two".