21201106674 has 32 divisors (see below), whose sum is σ = 48977960256. Its totient is φ = 6046661120.

The previous prime is 21201106651. The next prime is 21201106711. The reversal of 21201106674 is 47660110212.

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 15 ways as a sum of consecutive naturals, for example, 9446787 + ... + 9449030.

It is an arithmetic number, because the mean of its divisors is an integer number (1530561258).

Almost surely, 2^21201106674 is an apocalyptic number.

21201106674 is an abundant number, since it is smaller than the sum of its proper divisors (27776853582).

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

21201106674 is a wasteful number, since it uses less digits than its factorization.

21201106674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18895850.

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 21201106674 its reverse (47660110212), we get a palindrome (68861216886).

The spelling of 21201106674 in words is "twenty-one billion, two hundred one million, one hundred six thousand, six hundred seventy-four".