21068232201 has 9 divisors (see below), whose sum is σ = 30432519949. Its totient is φ = 14045197836.

The previous prime is 21068232191. The next prime is 21068232253. The reversal of 21068232201 is 10223286012.

The square root of 21068232201 is 145149.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 21068232201 - 2¹⁷ = 21068101129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21068232401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 411256 + ... + 459638.

Almost surely, 2^21068232201 is an apocalyptic number.

21068232201 is the 145149-th square number.

21068232201 is the 72575-th centered octagonal number.

It is an amenable number.

21068232201 is a deficient number, since it is larger than the sum of its proper divisors (9364287748).

21068232201 is an frugal number, since it uses more digits than its factorization.

21068232201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96772 (or 48386 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Multiplying 21068232201 by its product of nonzero digits (2304), we get a square (48541206991104 = 6967152²).

The spelling of 21068232201 in words is "twenty-one billion, sixty-eight million, two hundred thirty-two thousand, two hundred one".