21101722083 has 12 divisors (see below), whose sum is σ = 32824901200. Its totient is φ = 12985675056.

The previous prime is 21101722079. The next prime is 21101722111. The reversal of 21101722083 is 38022710112.

It is not a de Polignac number, because 21101722083 - 2² = 21101722079 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21101722483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90178183 + ... + 90178416.

Almost surely, 2^21101722083 is an apocalyptic number.

21101722083 is a deficient number, since it is larger than the sum of its proper divisors (11723179117).

21101722083 is a wasteful number, since it uses less digits than its factorization.

21101722083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180356618 (or 180356615 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The spelling of 21101722083 in words is "twenty-one billion, one hundred one million, seven hundred twenty-two thousand, eighty-three".