21234662201 has 4 divisors (see below), whose sum is σ = 21323510400. Its totient is φ = 21145814004.

The previous prime is 21234662167. The next prime is 21234662203. The reversal of 21234662201 is 10226643212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21234662201 - 2²² = 21230467897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21234662203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44423741 + ... + 44424218.

It is an arithmetic number, because the mean of its divisors is an integer number (5330877600).

Almost surely, 2^21234662201 is an apocalyptic number.

It is an amenable number.

21234662201 is a deficient number, since it is larger than the sum of its proper divisors (88848199).

21234662201 is an equidigital number, since it uses as much as digits as its factorization.

21234662201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88848198.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 21234662201 in words is "twenty-one billion, two hundred thirty-four million, six hundred sixty-two thousand, two hundred one".