21477200107 has 16 divisors (see below), whose sum is σ = 25735115520. Its totient is φ = 17692884000.

The previous prime is 21477200093. The next prime is 21477200137. The reversal of 21477200107 is 70100277412.

It is not a de Polignac number, because 21477200107 - 2¹⁵ = 21477167339 is a prime.

It is a super-2 number, since 2×21477200107² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21477200137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2229144 + ... + 2238757.

It is an arithmetic number, because the mean of its divisors is an integer number (1608444720).

Almost surely, 2^21477200107 is an apocalyptic number.

21477200107 is a deficient number, since it is larger than the sum of its proper divisors (4257915413).

21477200107 is a wasteful number, since it uses less digits than its factorization.

21477200107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467954.

The product of its (nonzero) digits is 5488, while the sum is 31.

Adding to 21477200107 its reverse (70100277412), we get a palindrome (91577477519).

The spelling of 21477200107 in words is "twenty-one billion, four hundred seventy-seven million, two hundred thousand, one hundred seven".