21277041099 has 8 divisors (see below), whose sum is σ = 28419074112. Its totient is φ = 14159851080.

The previous prime is 21277041077. The next prime is 21277041127. The reversal of 21277041099 is 99014077212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21277041099 - 2¹⁷ = 21276910027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21277041099.

It is not an unprimeable number, because it can be changed into a prime (21277041199) 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 7 ways as a sum of consecutive naturals, for example, 6208749 + ... + 6212174.

It is an arithmetic number, because the mean of its divisors is an integer number (3552384264).

Almost surely, 2^21277041099 is an apocalyptic number.

21277041099 is a deficient number, since it is larger than the sum of its proper divisors (7142033013).

21277041099 is a wasteful number, since it uses less digits than its factorization.

21277041099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12421497.

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 21277041099 in words is "twenty-one billion, two hundred seventy-seven million, forty-one thousand, ninety-nine".