21107269153 has 2 divisors, whose sum is σ = 21107269154. Its totient is φ = 21107269152.

The previous prime is 21107269147. The next prime is 21107269171. The reversal of 21107269153 is 35196270112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16917684624 + 4189584529 = 130068^2 + 64727^2 .

It is a cyclic number.

It is not a de Polignac number, because 21107269153 - 2¹⁷ = 21107138081 is a prime.

It is a super-2 number, since 2×21107269153² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21107219153) 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 as a sum of consecutive naturals, namely, 10553634576 + 10553634577.

It is an arithmetic number, because the mean of its divisors is an integer number (10553634577).

Almost surely, 2^21107269153 is an apocalyptic number.

It is an amenable number.

21107269153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21107269153 is an equidigital number, since it uses as much as digits as its factorization.

21107269153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 21107269153 in words is "twenty-one billion, one hundred seven million, two hundred sixty-nine thousand, one hundred fifty-three".