21342312201 has 8 divisors (see below), whose sum is σ = 32521618624. Its totient is φ = 12195606960.

The previous prime is 21342312197. The next prime is 21342312239. The reversal of 21342312201 is 10221324312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21342312201 - 2² = 21342312197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1016300581 = 21342312201 / (2 + 1 + 3 + 4 + 2 + 3 + 1 + 2 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342312301) 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 in 7 ways as a sum of consecutive naturals, for example, 508150270 + ... + 508150311.

It is an arithmetic number, because the mean of its divisors is an integer number (4065202328).

Almost surely, 2^21342312201 is an apocalyptic number.

21342312201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21342312201 is a deficient number, since it is larger than the sum of its proper divisors (11179306423).

21342312201 is a wasteful number, since it uses less digits than its factorization.

21342312201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016300591.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21342312201 its reverse (10221324312), we get a palindrome (31563636513).

The spelling of 21342312201 in words is "twenty-one billion, three hundred forty-two million, three hundred twelve thousand, two hundred one".