21425601106 has 16 divisors (see below), whose sum is σ = 39554956224. Its totient is φ = 8476061904.

The previous prime is 21425601103. The next prime is 21425601163. The reversal of 21425601106 is 60110652412.

It is not an unprimeable number, because it can be changed into a prime (21425601103) by changing a digit.

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, 58861360 + ... + 58861723.

It is an arithmetic number, because the mean of its divisors is an integer number (2472184764).

Almost surely, 2^21425601106 is an apocalyptic number.

21425601106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21425601106 is a deficient number, since it is larger than the sum of its proper divisors (18129355118).

21425601106 is a wasteful number, since it uses less digits than its factorization.

21425601106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117723105.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 21425601106 in words is "twenty-one billion, four hundred twenty-five million, six hundred one thousand, one hundred six".