21107269147 has 2 divisors, whose sum is σ = 21107269148. Its totient is φ = 21107269146.

The previous prime is 21107269097. The next prime is 21107269153. The reversal of 21107269147 is 74196270112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21107269147 - 2⁷ = 21107269019 is a prime.

It is not a weakly prime, because it can be changed into another prime (21107269247) 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 as a sum of consecutive naturals, namely, 10553634573 + 10553634574.

It is an arithmetic number, because the mean of its divisors is an integer number (10553634574).

Almost surely, 2^21107269147 is an apocalyptic number.

21107269147 is a deficient number, since it is larger than the sum of its proper divisors (1).

21107269147 is an equidigital number, since it uses as much as digits as its factorization.

21107269147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 21107269147 in words is "twenty-one billion, one hundred seven million, two hundred sixty-nine thousand, one hundred forty-seven".