21200262355 has 16 divisors (see below), whose sum is σ = 25746996960. Its totient is φ = 16756064512.

The previous prime is 21200262289. The next prime is 21200262359. The reversal of 21200262355 is 55326200212.

It is a cyclic number.

It is not a de Polignac number, because 21200262355 - 2⁷ = 21200262227 is a prime.

It is a super-2 number, since 2×21200262355² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21200262359) 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 15 ways as a sum of consecutive naturals, for example, 549612 + ... + 586918.

It is an arithmetic number, because the mean of its divisors is an integer number (1609187310).

Almost surely, 2^21200262355 is an apocalyptic number.

21200262355 is a deficient number, since it is larger than the sum of its proper divisors (4546734605).

21200262355 is a wasteful number, since it uses less digits than its factorization.

21200262355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38678.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 21200262355 its reverse (55326200212), we get a palindrome (76526462567).

The spelling of 21200262355 in words is "twenty-one billion, two hundred million, two hundred sixty-two thousand, three hundred fifty-five".